I have had a game crash on me as well the moment I started streaming it with OBS but that was due to a problem with the new OpenGL capture in OBS. I am not sure that is what's going on here though, given the fact that bug was supposed to have been resolved.
dodgepong -- are you running the same version of Minecraft as idan072? I don't play Minecraft so I can't check if the new version of Minecraft could be the problem instead. Maybe it doesn't like the inject anymore? I don't know, could be some type of hackshield or something that was added to Minecraft? I don't know the game very well so can't say.