Here’s the final release for the update to Paint.NET that I’ve been talking about over the last few weeks. It brings performance improvements, a smaller download size, and of course the requisite bug fix. Thanks for everyone who has tried out the Beta and sent in bug reports and installation problems.
As usual, there are two ways to get it. The first is to just go to the Paint.NET website and download it; there is no need to uninstall your older version, as that will be taken care of automatically. The second way is to use the built-in updater. The program will automatically offer you the update within the new week, or you can go to the Utilities menu and click on Check for Updates.
Here’s what’s new since v3.5.4:
- Fixed the bug where saving as 8-bit PNG/GIF/BMP wasn’t always working, usually with larger images.
- Improved the performance of the Gaussian Blur effect by 30-40%.
- Improved the performance of all the layer blending modes by 15-30%.
- Improved the performance of zooming with the mouse wheel on dual-core Intel Atom systems.
- Updated to support .NET 4.0 if no other version of .NET is installed.
- Reduced download size from 4.8MB down to 3.5MB.
- Fixed a small error in the Chinese translation.
Please note that Service Pack 3 (SP3) is now required for Windows XP users. For those using Windows Vista, you must now have Service Pack 1 (SP1) installed. If you do not have these installed, then the Paint.NET installer will open the appropriate download page on Microsoft’s site.
Enjoy!
paint.net blog 
After updating to latest 3.5.5 and playing with a previously created *.png image, either after a moved from center zoom, or 100% gaussian blur or after a “save as” (not sure) I could no longer see the cursor (running under Win7x64). Pressing Ctrl would show where the cursor actually was. I could not see the auto-hide task bar but pressing the windows key and clicking on the area next to the Start icon showed me the task bar, where I closed Paint.NET. I can’t be more precise at this time, but in case anyone else sees this disapperaing cursor problem, hopefully they will report it. My second monitor showing a CPU use gadget did no show any significant CPU activity when I could not see the cursor.
I have no current problem with Paint.NET v3.5.5 (Final Release build 3.55.3767.28608). After a delayed-until-later update of 3762 I had the cursor problem previously described. I restarted today and noticed I was at 3762. I did an immediate Check-for-Update and got to 3769 and restarted. All is OK and I cannot reproduce any problem. Win7 Pro x64.
Just downloaded and using with no problems to report. Thank you and keep up the good work.
Error 1603. fatal error HELP!!! cant install.
This blog isn’t for troubleshooting. Please go to the forum.