I've done as you suggested.
After 10 minutes I have another ~250MB .mdmp file and a crash log:
Unhandled exception: Address=76f8b6f9 Code=c0000008
Warning: Multiple calls to GenerateExceptionReport! Ignoring additional calls.Unhandled exception: Address=77afb6f9 Code=c0000008
Unhandled exception: Address=7766576f Code=c0000005
ERROR: Failed to write minidump.ERROR: GenerateCrashReport failed.Warning: Multiple calls to TopLevelExceptionFilter detected.Unhandled exception: Address=7781576f Code=c0000005
Warning: Multiple calls to TopLevelExceptionFilter detected.ERROR: Failed to write minidump.Unhandled exception: Address=7727bac5 Code=c0000008
Unhandled exception: Address=77bdb6f9 Code=c0000008
Unhandled exception: Address=77f1b6f9 Code=c0000008
Warning: Multiple calls to TopLevelExceptionFilter detected.ERROR: GenerateCrashReport failed.Warning: Multiple calls to GenerateExceptionReport! Ignoring additional calls.Warning: Multiple calls to TopLevelExceptionFilter detected.Warning: Multiple calls to TopLevelExceptionFilter detected.Unhandled exception: Address=77505a88 Code=c0000005
ERROR: Failed to write minidump.Warning: Multiple calls to TopLevelExceptionFilter detected.Unhandled exception: Address=7769b6f9 Code=c0000008
Unhandled exception: Address=77c73ea0 Code=c0000005