I found a solution to the linux crash in this thread: https://forums.playdeadlock.com/threads/crash-on-linux.583/ although unfortunately it is not applicable to windows systems.
It appears to be memory related. I would assume the same problem is causing both the crash on linux and the shutdown...
I experienced this on my windows install as well, and it consistently happens a few seconds after loading into the hero test. I usually play on linux, and in the same situation the game crashes suddenly.
