Frequently Asked Questions
The current versions of ArtRage support the following systems and languages. Note that if your language is not supported, ArtRage will default to English, and ArtRage for Windows or macOS allows you to manually select an alternative language from the list of ones it supports:
Windows or macOS:
ArtRage 5 and ArtRage Lite both support:
Systems: Windows Vista or later, 32 and 64 bit. macOS 10.7 or later, 32 and 64 bit. Languages: English, French, German, Spanish, Italian, Dutch, Russian, and Japanese.
ArtRage for iOS:
ArtRage for iOS supports:
Systems: iOS 10 or later.
Hardware: ArtRage for iOS is a Universal app that supports both iPad and iPhone. Includes support for Apple Pencil and styluses from Wacom and Adonit.
Languages: English, French, German, Spanish, Italian, Dutch, Russian, and Japanese.
ArtRage for Android:
ArtRage for Android and ArtRage Oil Painter Free for Android both support:
Systems: Android 4.0 or later.
Hardware: Phone and Tablet devices with a screen 320dpi or greater. Includes support for Samsung S-Pen.
Languages: English, French, German, Spanish, Portuguese, Japanese, Korean, Russian, Vietnamese, Chinese (Simplified and Traditional).
ArtRage for Windows or macOS:
Updates to your version (for example, updating ArtRage 4.0 to 4.5) are provided free of charge from our Member Area. Upgrades to new versions (for example upgrading ArtRage 4 to ArtRage 5) are given an upgrade discount to make the cost of the new version cheaper, this is also provided from our Member Area.
To download the latest version of your software our claim an upgrade discount please follow these steps:
- Make sure you have created a Member Area Account. Click here for more information on how to do this.
- Make sure you have Registered your ArtRage Serial Number. Click here for more information on how to do this.
Once you have followed those steps, check that your current product is listed on your Profile page then you can move on to the next step.
To Download Updates:
To update to the latest version of your product click the Download button next to its entry on your Profile Page. That will provide you with options such as downloading for Windows or macOS. Select the appropriate version and download the software to your computer.
The file you download is an installer file. Locate it on your computer and double click it then follow instructions to install it. Once you have done that, your old version of ArtRage will have been updated to the latest. Note that any custom content you made such as tool presets and stencils, and your saved paintings will not be harmed by this update process.
To Purchase an Upgrade:
To purchase an upgrade to a new version of ArtRage click the Upgrade button next to your current version on your Profile Page. This will assign you an upgrade coupon and a popup will appear with an Upgrade button that you can click to confirm that you wish to proceed. Click this and you will be taken to the online store with your discount coupon applied to the new product price.
When you complete your purchase the store will email you a new Serial Number and download links for the new product. Download the product to your computer and double click the installation file to install it.
If you see a note next to your product on the Profile Page indicating that your Coupon has ‘already been claimed’ please contact our Customer Support as this message usually indicates that an older coupon was claimed but not used before we adjusted our systems, and we should be able to assist.
ArtRage for iOS or Android:
Updates to the latest version of your App on iOS or Android are handled by the store you downloaded the app from. Return there and you should be able to download the latest version of the product.
Unfortunately we do not have access to the download systems of those stores so if you have problems downloading, or if it looks like you need to purchase the App again when you have already purchased it, please contact customer support for the store, they should be able to help you solve the problem.
ArtRage for Windows or macOS:
When you purchase ArtRage or ArtRage Lite for Windows or macOS you receive an installer with the software product and a range of sample resources such as tool presets, sticker sheet, stencils, and more.
The software you receive does not require a Subscription – once you have paid for it you can use it for as long as you want with no further payments. We provide a free download service via the ArtRage Member Area that lets you download the installer for your product again whenever you need it if you have Registered your Serial Number there.
Updates to your version (for example, updating ArtRage 4.0 to 4.5) are provided free of charge, these usually include fixes for issues that appeared after release, and sometimes small feature updates.
Upgrades to new versions (for example upgrading ArtRage 4 to ArtRage 5) are given an upgrade discount to make the cost of the new version cheaper. These upgrades come with major feature additions.
We allow you to install ArtRage on more than one computer for your own use, so if you have a laptop and a desktop machine you can install on both from the same license.
ArtRage for iOS or Android:
When you purchase ArtRage for iOS or Android you receive the application and sample resources such as tool presets, downloaded from the store you used to make the purchase.
The App does not require a subscription and does not contain any in-App purchases so all of the features are available for use without further purchase.
If you download the Free version of ArtRage for Android (‘ArtRage Oil Painter Free’) you receive a limited feature set only, but the product does not require a purchase to use the features it provides. It does contain a ‘Purchase’ button allowing you to purchase the full version of ArtRage for Android but it does not contain advertising from other companies.
When you Unlock ArtRage you are given the option to Register it. This is done using the ArtRage Member Area. Follow these steps:
- Create a Member Area account if you do not already have one. These accounts are not automatically created when you purchase the product. For more information click here
- On the Profile page click the ‘Register’ button which is to the of the ‘Add New Product’ text.
- Enter your ArtRage Serial Number in the popup that appears. If you do not know your Serial Number, click here for information on how to find it.
- Click ‘Save’ under the Serial Number you entered.
If the page does not update to display your product, click outside the popup to dismiss it then click on the Profile link at the very top of the page, this should update to display the registered product.
Note that you only need to register the product once. Once it has been registered you do not need to repeat the process if you ever need to reinstall and unlock ArtRage again.
On Windows or macOS, the first time you launch ArtRage you will be asked to Unlock the product using your Serial Number. You will also be asked to enter it when you Register your product in our Member Area. If you experience problems with either of these systems, please double check that you have entered the right Serial Number:
Serial Number Error when Unlocking or Registering:
– ArtRage 3 or later uses a 25 digit Serial Number. ArtRage 2 uses a 20 digit Registration Key.
– If you have your Serial Number in digital format such as in an email you can Copy it from there and Paste it in to the Unlock panel in ArtRage.
– If you received ArtRage with a Wacom graphics tablet or other hardware, please make sure you are using the ArtRage Serial Number the manufacturer provided, Wacom ‘Software Download Bundle’ codes and tablet serial numbers will not unlock ArtRage.
Serial Number Already Claimed when Registering:
Each ArtRage Serial Number can only be Registered once in our Member Area. If you receive an error telling you that your Serial has already been registered, it may be because you previously registered it with a different email address, or that a duplicate Serial Number has been given out. Please contact us and let us know the Serial Number you are trying to register and we can look in to it for you.
If you continue to have problems, please contact us and let us know the Serial Number you are entering along with where you received it from and we should be able to help!
Where you can find your ArtRage Serial Number depends on which version you are using:
ArtRage for iOS or Android:
The iOS and Android versions of ArtRage do not require a Serial Number so you should not need one.
ArtRage for Windows / macOS:
If you have ArtRage running on your computer you can locate your Serial Number using its option in the Help Menu. If you do not have ArtRage running, where you find your Serial depends on where you purchased it:
Purchased from us:
If you purchased ArtRage from our website you would have received your 25 digit Serial Number with your purchase confirmation email. If you cannot locate it, please contact us and let us know the email address or street address you used when you made the purchase so we can confirm your details and find your Serial.
Note that if you own ArtRage 2, the Serial Number is called a ‘Registration Key’ in your email and is a 20 digit code.
Received with a Wacom or other graphics tablet or hardware:
If you received your software as part of a bundle with a Wacom or other model graphics tablet or hardware your Serial Number should have been provided by the company who manufactured the tablet. Because we do not have access to their customer systems, you will need to contact Customer Support for the company who manufactured the hardware and they should be able to help.
Purchased on Steam:
If you purchased ArtRage on Steam you can locate your Serial Number using the ‘CD Key’ option for the software in your library. To do this: Launch the Steam Client, right-click the ArtRage app under your Steam Library and then select “View CD-Key”. If desired, you can copy this serial key and register it in our member area to gain download links for the non-steam version and upgrade discounts.
ArtRage 2 from Smith Micro:
If you purchased a boxed copy of ArtRage from Smith Micro your Serial Number should be in the box. Unfortunately we do not have access to serial number records for Smith Micro customers so if you are unable to locate it you will need to contact their Customer Support line.
Windows and macOS
After you complete your purchase of ArtRage from our online store, you should see download links displayed for Windows and OS X. Click the download link for your operating system to download the ArtRage installer. The online store also sends you an email with your serial number and download links for ArtRage.
If you no longer have the email from the online store, or their download link has expired, you can also download ArtRage from our Member Area once you’ve created a Member Area account and registered your ArtRage serial number.
If you are unsure or need help, please contact us! We’ll be happy to help track down your purchase and help you to download your software again.
Android and iOS
After purchasing the mobile version of ArtRage from the Google Play store or iOS App Store, you can download the app right away from that store.
We have purchase links for all versions of ArtRage on our Buy page.
Visit that page and select the version you want ( ArtRage 5 or ArtRage Lite for Windows or macOS, ArtRage for iOS for iPad and iPhone, and ArtRage for Android if you have an Android device ). You will then be taken to the appropriate web store to make the purchase.
Painting with ArtRage Topics
Absolutely! We just provide the tools for you to create with. Anything you make with ArtRage is yours to do with as you please.
There is no set maximum limit for paintings in the desktop version of ArtRage 5. The amount of memory your desktop computer has, and the increasing demands of working at large sizes with a simulation of real paint will be the limiting factor. You can download a demo of Artrage to try it out on your computer. Feel free to contact us if you have any questions!
Mobile versions of ArtRage can create paintings up to 2048 x 2048 pixels in size. On the iPad Pro, you can create paintings up to 4096 x 4096 pixels in size.
ArtRage painting files can be opened with any current version of the product. If you open a painting file that contains features your version does not support, those layers will not be available.
ArtRage for Windows / macOS Topics
If you want to install ArtRage on one additional computer for your own use, that is ok with us.
The purchased ArtRage serial number is for a single user, but we allow you to install ArtRage on multiple devices for your own use. This can be either Windows and/or Mac OS-X, providing you with a download installation file for each platform.
If you wish to use more computers than this, then please contact us about Bulk Licensing.
If you are finding that any strokes you make look stepped, check that ‘snap to grid’ has not been enabled. Open the View menu, select ‘Grids’ and if the ‘Snap to grid’ option is checked, uncheck it.
If you are using ArtRage 3 or 4 and experiencing regular crashes in Windows 10, this may be due to multithreading. This system changed in Windows 10, so it will no longer work properly in earlier versions of ArtRage.
Artrage 3 Studio or Studio Pro
Disable multithreading in Edit -> ArtRage Preferences -> Advanced
Update to the latest version of ArtRage 4 by downloading it from our Member Area to correct this.
If you are using a older version of ArtRage 2, which came with a Wacom tablet, you may see this error message upon launching the app. Downloading and installing the latest version of Wacom’s tablet software should correct this. We also recommend downloading and installing the latest version of ArtRage 2 ( 2.5.20 ) from our Member Area to correct this.
As current versions of ArtRage are 64 bit applications, 32 bit Photoshop filters are not compatible. However, you can also run the 32 bit version of ArtRage if needed.
In the Start menu, open the ArtRage folder and instead of clicking ‘ArtRage’, click ‘ArtRage 32 bit’
On macOS, select the application icon and choose Get Info from the Finder’s File menu, then turn on the 32-bit Mode toggle in the info panel and the app will launch in 32 bit mode.
To change the cursor in ArtRage, open the Edit Menu, select Preferences, then Cursors. You can select from the three different cursor types here. You can also use the keyboard shortcuts 1,2 and 3 at any time to change to the precise, outline and tool cursors respectively.
This feature is no longer available.
To locate your ArtRage version, open the Help menu and click on ‘About ArtRage’. You will see the version number at the bottom right of this window. If you are using the 64 bit version, it will also say so here.
Normally you should only need to enter your serial number the first time you launch ArtRage. However, if it happens repeatedly, this means that something is preventing ArtRage from storing its serial number information.
Launching ArtRage as an administrator should correct this. Browse to your version ArtRage in the start menu and right click it, then choose ‘Run as Administrator’ from the menu. On Windows 8 or later you may need to select ‘More’, before selecting ‘Run as Administrator’.
ArtRage should then launch and ask for your serial number. Enter it, click OK then quit ArtRage and start it again. It should now start without asking for your serial number.
If you are experiencing problems with ArtRage not reacting to the pressure of you strokes or not painting at all when using a stylus please follow the troubleshooting steps below. For any other problem please Contact us and we’d be happy to help.
Checking ArtRage Input Settings for Stylus Type.
ArtRage supports two different types of tablet input on Windows: The older ‘Wintab’ standard, and the newer ‘Realtime Stylus’ standard. In many cases where the stylus is not producing pressure changes or is not producing paint at all having support for both of these turned on at once can be the cause, so they can be turned off independently.
Follow these steps to change ArtRage input settings:
- Open the ArtRage Preferences panel from the Edit menu and locate the ‘Input’ section.
- Make sure ‘Use Wintab’ is turned on and ‘Use Realtime Stylus’ is turned off.
- Click OK and restart ArtRage.
- If the problem persists, return to the Preferences panel and turn ‘Use Wintab’ off, and turn ‘Use Realtime Stylus’ on.
- Click OK and restart ArtRage.
This tests whether the problem was caused by ArtRage incorrectly handling information when both standards were supported. If it does not solve the problem, please do the following:
- Make sure that any drivers for your tablet are up to date.
- Contact us and let us know what version of Windows you are using, what type of input device you are using, and exactly what the problem is.
The Short Answer
When you create a painting that you want to print in ArtRage for Windows or macOS, follow these steps to make sure it will be the right size when printed:
- Select the ‘Print Size’ tab at the top of the New File panel.
- Enter the physical dimensions you want the printed image to be.
- Enter the DPI value the printer requires when printing.
ArtRage will then calculate how many pixels are required to make the canvas the right size.
For more information, keep reading!
In More Detail…
The size of a painting on your computer screen is not necessarily the same as its size when printed. This is because the number of dots (‘pixels’ on the screen) per inch of space is often different between screens and printed documents.
The trick to creating your painting at the correct size on the screen for the size you want it to be when printed is to use the Print Size option in the ArtRage New File panel, and to understand DPI.
What is DPI?
DPI is an important concept when you want to print. You may see it when you look at the technical specifications of the printer you are using, or a print shop may refer to it when you ask them to print an image.
‘DPI’ stands for ‘dots per inch’ and refers to the number of dots (which are the same as ‘pixels’ here) a printer will place in each inch of space. So, when someone refers to the DPI value of your image, they are referring to how many of its pixels will be placed across an inch of space when printed.
An average computer screen might be 72 DPI, while a high quality print might be 300 or even 600 dpi, so you can see that many more pixels can be required per inch of space when printing an image.
If I create a painting in ArtRage that is 800 x 600, it might be a reasonable size on my screen but if I print it on a printer that applies 300 dots per inch, it will only be 2.6 inches wide by 2 inches tall.
So you don’t really care about DPI when you create an image on your screen – you just create an image that looks the right size while you’re painting it. But you do need to think about it if you are going to print that image later.
Now you know what DPI is, we can look at the two ways you can set up the painting.
Ensuring the Painting is the Right Size When Created.
When you create a painting in ArtRage you can choose to create it using either Screen Size or Print Size by selecting the appropriate tab in the New File panel.
The Screen Size option lets you select how many pixels wide and tall the painting is. This is good for if you will be showing your painting digitally, sharing it online for example, but we want to set up for printing. Note that when you select Screen Size, the info bar below the width and height entry boxes will show you what size that painting would be if printed using a specific DPI value.
The option we want is ‘Print Size’. Print Size lets you select the actual printed dimensions your image will adopt when printed.
When you set the values in Print Size, choose the physical dimensions you want and set the DPI value the printer you will be using requires. ArtRage will then calculate the total amount of pixels width and height the painting requires.
Note: In some cases this may result in a huge painting that has so many pixels ArtRage slows down while you work on it. In these cases, it’s easier to create the painting at a smaller size then export it as an image and increase the size after you’ve painted it in another application.
Understanding print settings can be tricky if you’re not used to it. If you have any problems please Contact Us and we’ll be happy to help!
You can import a standard image file to use as the basis of a new painting by opening the File menu and choosing ‘Import Image File’.
Images can also be imported to existing paintings as a new layer by choosing ‘Import Image to layer’ in the File menu. After importing the image, you can scale, rotate and resize it, then either click the check button in the Transform window or press enter to confirm.
To export your painting as a standard image file, open the File menu and choose ‘Export Image File’. You can select the type of image you want to export here.
ArtRage for iOS / Android Topics
If when you try to paint, nothing is visible:
- Check the current selected colour at the bottom right and make sure that it’s not set to white.
- If you are using your finger, if you have previously set the app to use only a stylus, this could be the cause. Check your stylus preferences.
If when you try to paint, you see an eye icon appear, this indicates that the layer you are trying to paint on is hidden. Open the layer panel, and for the currently selected layer which is shown with a green highlight, tap the closed eye icon. This will show the layer contents and allow you to paint.
If you experience a crash while using Artrage for Android, please contact us for assistance so that we can do some troubleshooting with you. When contacting us, please let us know:
- What you were doing when the crash occured in as much detail as possible
- Which version of Artrage for Android you were using ( the free or paid edition )
- The version of Android you are using
- The Android device you are using.
Because ArtRage mobile editions have capped canvas sizes, you may want to create larger images to print from. While it’s possible to export your ArtRage paintings as PNG image files, then resize them on your computer, this is not ideal as there will be some loss of quality.
Instead, you can record a script of your painting which can be played back on the full version of ArtRage for Windows or macOS. To record a script, make sure that ‘record script’ is enabled when creating a new painting file. Then, when you’re done painting, you can export the script file from your gallery, then play this file back in the desktop version at the size you prefer.
When you back up your iOS device using iTunes on a desktop or laptop computer all of the paintings you have created in ArtRage will also be backed up, along with any custom resources such as presets you create. This means that when you restore your device, all your content should also be installed.
You can also Export entire Groups of paintings to any of the standard export locations on your iOS device, including apps that support cloud services such as iCloud Drive, by tapping the Menu button to the right of the Group you want to export in the Gallery and selecting the ‘Export Group’ option.
Your paintings are stored in the /ArtRagePaintings folder on your device. You can freely copy ArtRage painting files to and from this folder.
Yes! This is controlled by the policies and technology of each individual store, but we have no restrictions on you using the ArtRage iOS and Android apps across multiple devices.
Unfortunately, this isn’t possible. ArtRage app licences are tied to your app store account.
This will mostly only apply to users who purchased through GALAXY Apps (or received it free from GALAXY Gifts) and want to use ArtRage on a non-Samsung device.
Unfortunately the Google Play Store, Amazon Android Store, and GALAXY Apps are separate systems, and we have no way to transfer sales information.
The Google Play Store allows you to refund your purchase automatically within the first fifteen minutes, and we can refund purchases if you have a problem with your product, but we are unable to directly refund purchases made through GALAXY Apps or iTunes. You will need to contact the individual store support directly.
If you are having a specific issue with your app, please contact us first and we will try and help.
If when you launch ArtRage, you are asked to validate it everytime, or can only run it when connected to the internet, this is likely due to a problem with the google play store license for ArtRage. Try the following steps to correct the problem.
Uninstall ArtRage and reinstall. Make sure you are connected to wifi and launch ArtRage again to validate your license.
If this doesn’t work, save your current painting to prevent data loss, then close ArtRage completely. Clear ArtRage’s app data via the Android Application Manager in Settings.
Yes! ArtRage for iOS supports the Pressure and Tilt features of the Apple Pencil stylus on compatible devices.
Yes! ArtRage for iOS lets you share files via iCloud Drive using Import and Export options. The app also supports the iOS Files app which allows you to share your files with other apps on your device including apps that provide cloud services.
To Import images for painting on iOS follow these steps:
- If you are currently painting tap the ArtRage logo button on the ArtRage toolbar and go to your Gallery using the option in the menu that appears.
- Tap the + button at the top right of the Gallery screen.
- Select one of the three Import options in the menu.
The ‘Import Files’ option opens a file location browser for you to import files from standard locations on your iPad or from cloud services you have installed such as Dropbox.
The ‘Import from Photo Library’ option allows you to import an image from your iPad Photos app.
The ‘Import a New Photo’ option allows you to take a new photo and import that.
When you have selected an item to import you will be asked to select where to put it in your Gallery. Select a folder and the file will be imported as a new Painting for you to select and paint on.
To Export or Share images on iOS follow these steps:
Access the Export option as follows:
- If the painting is currently open tap the ArtRage logo button in the ArtRage toolbar and select ‘Export Image’.
- If you are in the Gallery, tap the painting you want to export once, then tap the Export button at the bottom of the screen (the button next to the Open button).
The Export interface appears and allows you to select a type of file to export:
- If you want to export or share a normal image file other apps can understand, select the JPG or PNG type.
- If you want to export the full Painting file so that you can paint on it in another version of ArtRage, select the PTG type.
- If you have been recording a script and just want to export the script from the painting, select the Script type.
Once you have selected an export type, you will be asked to select a target for export using a standard iOS export picker. Only targets that understand the type of file you are exporting will be displayed. For example, if you export a PTG file only targets such as Mail or Dropbox will appear, as other apps don’t understand the contents of the file.
Note: Most types of sharing (Facebook, Twitter etc.) require a normal image type, use PNG or JPG for this purpose.
Select the target and the file will be exported.
To Import images on Android follow these steps:
- Open the main menu by tapping the ArtRage logo on the menu bar, then tapping ‘Gallery’ in the menu.
- Once in the Gallery, you can tap the Import Image button at the top right (looks like an image with a + at the top right corner).
After selecting your image, a new painting will be add to the Gallery with this image as the first layer.
To Export or Share images on Android follow these steps:
Access the Export option as follows:
- If the painting is currently open tap the ArtRage logo button on the menu bar and choose the ‘Share’ option.
- If you are in the Gallery, tap the painting you want to export once, then tap the Share button at the bottom of the screen.
When you do this, you will see two options:
- ‘Export Image’ lets you export a JPG or PNG image to Android’s Pictures folder.
- ‘Share Painting’ allows you to share your painting file with other applications on your device.
When you select the Share option you will need to select a type of file to share:
- If you want to share a normal image file other apps can understand, select the JPG or PNG type.
- If you want to share the full Painting file so that you can paint on it in another version of ArtRage, select the ArtRage Painting type.
- If you have been recording a script and just want to share the script from the painting, select the Script type.
Once you have selected an share type, you will be asked to select a target for sharing using a standard Android Activity picker. Only targets that understand the type of file you are sharing will be displayed. For example, if you share a PTG file only targets such as Gmail or Dropbox will appear, as other apps don’t understand the contents of the file.
Note: Most types of sharing (Facebook, Twitter etc.) require a normal image type, use PNG or JPG for this purpose.
If you are having trouble logging in to the ArtRage forums, make sure that your user name and password match those you entered when you created your forum account. You can reset your forum password by clicking the link provided on the page which is displayed after your fail to log in.
To create a forum account, visit our forums at https://forums.artrage.com and click ‘register’ at the top right, then follow the prompts. You will be asked to select a user name which will be your public name on the forums.
Note: This is separate to your Member Area account, you will need to manually create a forum account to use the forums.
To log in to the Member Area, you will need to have created an account. If you haven’t previously done this, see Creating a Member Area Account.
If you have already created an account and are having problems logging in, make sure that you are using the same email address you originally used to create the account. If you are using the same email address, it is likely that the password being entered is incorrect. You can reset your password by using the ArtRage Member Area – Forgot Password.
If you are having trouble and the steps above don’t help, please contact us directly and we’ll be happy to assist.
If you do not already have a Member Area account you can create one on the Member Area Login page. To create an account, follow these steps:
- Click on the Create Account button to the right hand side of the Login box.
- A popup will appear asking for an email address and password. Please ensure that you enter your details carefully, the email address is required for confirming your account.
- Click the ‘Create Account’ button.
The Member Area will now send an email to the address you listed with a link that you need to click to confirm your membership. If you do not see that email arrive within a few minutes, please check any spam folder you have, but if you cannot find it there contact us and we can help you finish setting up.
Once you have confirmed your account using the link in the email you can return to the Member Area Login page and log in to access your account.
You can view a comparison of features in the current versions of ArtRage here: ArtRage products comparison
ArtRage 3 Studio Pro and Artrage 4 were both available for purchase via Steam. Later versions are not available for purchase on that platform but you can still download your older software from your Steam Library.
Upgrading to Later Versions.
We provide upgrade discounts for customers who purchased ArtRage 3 Studio Pro or ArtRage 4 on Steam who want to upgrade to the current version of the product. If you own a Steam version you can claim your Upgrade Discount by following the standard steps for upgrading, which can be found here: Updating ArtRage, or Upgrading to a Newer Version of ArtRage.
Note that you will need your ArtRage Serial Number which can be located by selecting the ‘CD Key’ option to the right of the ArtRage page in your Steam Library.
Running ArtRage 4 for Steam on Windows XP.
ArtRage version 4.5 is not compatible with Windows XP but an older version of ArtRage 4 is available in the Beta branch of the product’s entry in your Steam Library. Right click on the ArtRage entry in your library list and select Properties, select the ‘Betas’ tab in the Properties window and choose the ‘XP Compatible’ entry from the beta opt in popup.
Once you have done that the older Windows XP compatible version will be downloaded.