Thank you for providing a repro video, I tried to reproduce it as well, but I didn't manage to make it crash.
It looks like you're on windows, are you also on the latest stable version of Spine?
It seems that you're using the rotate tool. What were you cliking on when it crashed? I tried to click on any possible combination using the vine example. Does it happen on the vine example project too or only inside that project?
Could you maybe provide steps of what you did to make it crash? (from the moment you turned on Spine possibly)
Thank you.
