[Brown Study]

That's happened a half-dozen times to me. Unfortunately, I know of no way to repair Photoshop 7 other than to reinstall it from the disks.

I run OS 9 as well as X, and when it happens, Photoshop won't run in either system. The file must be near or at root level and shared between both systems.

I've tried to compare Photoshop's files before reinstalling and after, but I didn't discover which one disappeared, so I reinstalled.

If I were paranoid, I'd suspect Adobe wrote suicide code to ensure the app isn't pirated.