This puzzles me.
-------"It says "family tree maker 2o12 was not properly closed the last time it was used. You may need to compact your last opened file to resolve any issues caused by an improper shutdown"----------
I have frequently had this message, and always continued to with opening the file. It opens normally. Once it is open I compact the file and usually see between 10 and 30% compaction. Normally I would see 2 to 6%.
I have so far never had a file become unusable after this message.
Your removing and reinstalling the program may have compounded what started out as a problem with a simple solution.