DLynn

I'm having the exact same problem when I tried to upgrade to the new 4.0.5, but have discovered a workaround until 4.0.6 is released. You can right click on Paint.NET and choose Run As Administrator, it will ask if you want to allow Paint.NET to make changes to this computer, click Yes. I do have a pdncrash file and emailed that to the email provided in the file.