SIGKILL when using Game Center on iPhone Simulator, everything works fine on device

I'm using Game Center to report achievements and scores when different开发者_如何学运维 things happen in my game. The problem is that sometimes (quite often, really) on the iPhone Simulator the app crashes a second or so after reporting achievement or score to Game Center. This never happens on the actual device, but on the simulator it's like 8 from 10 times.

Did anyone here have this problem?