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That's a Steam-related bug, should be fixed by relaunching Steam.
(If it says that it needs to close tb first, kill the process using task manager)
I tried to open the game after installing it from Steam but i get an error, don't know what to do with it. Verified game cache and didn't help, take a look at the screen-shot please.
http://imgur.com/3EI8XTK
Check to see if a Program is clashing with Toribash. This has been the case with recent reports of this problem.