First, my apologies. I meant the current version, 4.2.15, yet I wrote 4.15. My error. Thanks for the suggestions, but they do not work. I have never had a program fail to install except Paint.net, which has been consistent for several years. Up through ver 4.2.12 (or 13, I'm not sure), the install would pause at a certain point and prompt for content from a CD (which I never figured out). I found that if I then copied what had been installed up to that point to a separate folder and then canceled the install that the captured files were the complete product even though the install failed. Newer releases don't do that, but erase what had been done up to the failure.
What I would appreciate is a zipped copy of the installed program from c:\program files\paint.net . I have found that's all I need for it to work. The 1603 problem seems unsolvable in the way Paint.Net now installs. Thanks for any help on this.
david