I didn't bother using it for a while after some REALLY frustrating experiences early on, but tonight went ahead and downloaded the latest update to mess with after backing up my SysEx via MIDI-Ox, as I have a show coming up soon that needed some reorganization. This is on Windows 10.
This time, no trouble with presets getting reverted to factory setting. No trouble with anything besides a small user error that made me lose a genetically-derived child I really liked... but I made a couple more children and made sure to update my SysEx backup to include them. That feature is REALLY fun, I have to say. I foresee myself using it replace a bunch of the presets I don't need for stylistic reasons (and can still access via the Factory button anyway), just to see how weird and inspiring things can get.