Like the post above, I've found my c2 crashes when I alt+tab after working on a capx for a couple of hours. It's usually to see the preview, or edit an animation frame in Photoshop, but only after some time working on the project. I've seen it crash on a save as well, but less frequently. I wonder what they have in common?
I'm on the latest beta (270?), Windows 7 professional 64 bit, 16gb of memory.
Edit: I don't use Google drive