As of two days ago I started to get this error. Closed FTM2012, opened and backedup and compacted and retried several times. At first their were 3 inconsistencies that it asked whether I wanted to fix manually or overwrite - which btw, were not inconsistent!
Suddenly today there are 3169 inconsistencies! Yikes! Most of my FTM changes were to resolve places. If anyone hears what the problem is or how to solve it, please post in this forum. Lori