I don't really know what the problem is then. :-( Does it work when you move the "computers" folder into the .app?
Nop, I try all the permissions and I switch to application folders too, but nothing! I do not know where the application needs to find the directory.
The app finds the folder either directly in the same directory, or inside the .app - if it doesn't work I really don't know what is happening. I just removed the dust from my old Mac and tried the .app myself, and it works without any modifications. :-/ Sorry!