I made a game for the Ludum Dare this year. After submitting it, I opened it back up to convert to flash and found that three pivotal objects (the player movement object, player animation object, and player's gun) had all somehow graphically corrupted. They still worked fine in terms of associated events but showed up in game as black "L" shapes and were not fixable in the animation editor: it opens to show them with totally empty frames and an available palette of only 16 colors.
If I try to make any changes by importing graphics (otherwise the editable area remains 0-by-0) it refuses to save them, saying "the animation must contain at least one non-transparent image." Is there any way to fix these objects/import new graphics onto them? I'm using build R257.11