My review below tells only part of the story with the incomprehensible crashes while trashing files (up to about ten or twelve crashes now), but the application is rife with shoddy behavior. Every time I re-run it on the same folder of fonts, it finds exactly the same problem fonts that it supposedly MOVED the last time it ran. So it can't possibly be moving them. That would be bad enough, but it somehow manages to find even more problem fonts each time it's run that it had NOT found before. Which means: A) It's incompetent at identifying problem fonts (and moving them), or, B) It's creating problems with the fonts it inspects every time it's run. Which would you prefer? Furthermore, it has requestors that pop up for some functions that omit any "apply to all" option, requiring repititious interaction by the user. It also, while in the grips and spasms of its (apparently) RealBasic routines, utterly refuses to honor any "Hide" commands, even from the Finder attempting to "Hide Others." And after having gone through all the crashes while trashing duplicate files, restarting the entire long process until it got through that portion of its functions without crashing, it appears it arose from some limitation in the program itself of the number of trashed file. I can't prove that, but every time I would empty the trash after a crash, it seemed to be approximately the same number of files in the trash. And this program is up to version 7.2.0. You want to trust your fonts to this? You make the call. Sure hope you have backups.