JazzieB: Thanks for advice. Any idea why writing in the app bundle is a bad idea (Actually I'm not writing in the app bundle, I'm writing in the same folder that the app bundle is in, so at the top level of the app bundle).
Anyway I may have to change where it writes for Vista, so I'll just use that special folder you mentioned on Mac.
Anyway I may have to change where it writes for Vista, so I'll just use that special folder you mentioned on Mac.