KSP crashes my Mac

[Butterbar]

Sometimes when launching a flight or switching to a flight, the screen becomes completely unresponsive.  No matter if I'm alt-tabbed or in-game, none of my clicks register and I'm unable to use the keyboard at all (Not even using Activity Manager works at this point).  Putting the screen down on my Macbook also has no effect at all, as it still stays on (Apple logo stays lit).  Every time this happens, I have to restart my Macbook, and then it boots up completely fine.  KSP also doesn't register it as a crash for some reason, but every time this has happened, I've been running it.

Mods:

- Scatterer (Which I've also noticed has started to glitch more with the water recently, with it appearing in a shade of red and black on occasion) 

- KSPRC

- EVE

- EngineLight

- Final Frontier

- Mechjeb

- Mac OS X 64-bit workaround

This has only recently started to happen.  I have not installed any mods or done anything significant in this timeframe.  I am running OS X 10.10.5 Yosemite.

Edited March 20, 2016 by Butterbar