I can't say i've had any compatiblity problems either. I've run Adobe Photoshop Version 5.0, 5.5, on Win98 and 6.0, 6.01 on Win98, WinME, Win2K Pro and currently on XP with no problems.

I have had the explorer.exe has caused an error and will be shut down. Everytime I tried to copy/paste, drag/drop any file on destop or between any folder, I would get that error when I was using Win98. I was dual booting with Win2k and never got the error on that. It drove me crazy. I tried everything. Even installing Win98 again. The only way I could copy/move a file was to zip it up and unzip it in new location or boot using Win2K Pro and copy/move my Win98 files that way. Finally I had to reformat and installed Win98 and Win2K again. The problem vanished.