Ashley FWIW I also installed r250(just to see if it was any different) and getting the same crash after launching a capx.
I tried removing the license file as someone else did and it's still crashing. I tried uninstalling and reinstalling and still getting a crash. All in r250 as well.
If you feel my issue is inconsistent with the other reports I'll create a separate thread for r244. Let me know!
Thanks