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I've found a strange bug recently, when I tried to start "Super Hexagon" (Windows 7) through Steam with Mumble, which was ran previously. Game was immediately crashed (screenshot is attached).

Surprised, I started "SH" first and Mumble then (SH was crashed again). Without Mumble it starts w/o a problem.
 
Problem Event Name:   APPCRASH
Application Name:   superhexagon.exe
Application Versio:   0.0.0.0
Application Timestamp:   50bf8c6d
Fault Module Name:   OPENGL32.dll
Fault Module Version:   6.1.7600.16385
Fault Module Timestamp:   4a5bdadb
Exception Code:   c0000005
Exception Offse:   00092e8b
OS Version:   6.1.7601.2.1.0.256.1
Locale ID:   1049
Additional Information 1:   0a9e
Additional Information 2:   0a9e372d3b4ad19135b953a78882e789
Additional Information 3:   0a9e
Additional Information 4:   0a9e372d3b4ad19135b953a78882e789

Looks like it is actually Mumble issue (how the hell they're using graphic library?), but still it is Super Hexagon, which is crashed