Okay, so confirmed, I can see your crashes in our crash reporter.
All of your crashes are originating in steamclient64; this indicates they’re tied to Steam somehow. You are the only one getting these crashes in the beta.
- Can you please opt-out of any Steam betas you’re in? See http://steamcommunity.com/sharedfiles/filedetails/?id=182912431 (set beta to NONE)
- If that doesn’t work, can you reinstall Steam?
I’m also noticing that Visual Studio cannot find a match for your system’s ntdll.dll on Microsoft’s symbol servers, so I cannot debug the crash dumps. This may indicate corruption of ntdll.dll, which is a critical Windows file, so that’s no good. I can’t suggest what to do about that, aside from maybe a malware scan.