Here are the solutions:
* A utility named CanOpener available from Abbot Systems, Inc., will
extract all text, PICT, icon and sound resources from most stacks that
have been corrupted. All of the stack scripts, including the scripts of
buttons, fields, cards, etc., will be recovered as a text resource.
* If all else fails, restore the most recent back-up of the stack.
And some tips for prevention:
* If possible, avoid creating and modifying stacks on a floppy disk.
* Compact your stack often.
* When developing a stack, work on a copy -- and ALWAYS make back-ups.
This article is adapted from the Claris Tech Info database.