I seem to have hit the FTM 2012 bugs today.
Earlier I was merging duplicate place names from Census/BMD merges, and one batch deleted all the place names that I was merging - just went blank instead. Fortunately this place was one that had only just started to feature in the tree, so I could recreate, more or less.
Now I am going through the images and categorising them. Won't let me do more than a few, at most, before I get a socking great red cross instead of where the thumbnails should be. Compacted, restarted, no different. FTM 2012 had worked before, when there were less waiting to categorise. (There are almost 4000 images in total, only the most recent waiting to be sorted.) FTM 2011 could be slow, but didn't "crash" here, at least not often.
Fortunately now time for a break.