Good point about the backup. I guess I've been lucky. Since FTM 2012 came out I'm sure the program has closed hundreds of times on me. With the first version about every half hour. Much better with the latest update but still happens. Depending on the computer I'm working with it can happen with varying frequency. At home I can't get much bigger than about 680 MB (FTM in RAM) but on my work laptop I can get closer to 1 GB before it closes.
Still it would be nice to have at least an acknowledgement from the developers. Not holding my breath though.