I've been getting quite a lot of completely random crashes lately. I'm not really sure what information to provide to help monitor this particular thing.
It doesn't matter what size canvas I use.
It doesn't matter what brush I use, I think?
It doesn't matter what other aps I'm using.
Only things that come to mind currently are, possibly it could be related to Reflector 3's desktop screen mirroring, or somehow related to auto saving, ironically.