So I was checking games which cause Bluescreen/Browser malfunction/GSM (General Startup Malfunction)/continuous crashes.

When I launched Spiral Knights I got along with game window a system message window.

"Windows has encountered a serious error and will restart in about 1 minute. Save your work."

Is SK the cause of system errors? Or it was just one-time experiment? Of course I uninstalled it to stop irreversible computer damage.