Which information should your support request have? KSP version: Kerbal Space Program - 0.25.0.642 (OSXPlayer) OS: Mac OS X 10.9.5 CPU: Intel® Core i5-2415M CPU @ 2.30GHz (4) RAM: 16384 GPU: Intel HD Graphics 3000 OpenGL Engine (579MB) SM: 30 (OpenGL 2.1 [2.1 INTEL-8.24.16]) RT Formats: ARGB32, Depth, ARGBHalf, RGB565, ARGB4444, ARGB1555, Default, DefaultHDR, ARGBFloat, RGFloat, RGHalf, RFloat, RHalf, R8 A detailed explanation of what happened and what you were trying to accomplish Basic thing that is common is if I go full screen and play, some times it will freeze the screen and lock up KSP. I can Command-Tab over to the other screen and force quit. All the while my system can be doing other things and the max temp i have noticed was 195F I think. But again, everything else is running, but KSP is locked up. In this last go I was trying to do the RT10 booster / splashdown test. But it has locked up on other flights as well. Simply making Squad aware of an issue i'm seeing. A screenshot of your craft or any relevant screens Sorry, Full screen KSP locks up and the cursor turns to the Spinning Beachball of death. A .craft file or save files if relevant I don't think a save file will help, but I can upload one if that is needed. The ouput_log.txt or player.log file KSP creates when it launches and, if applicable, the crash log KSP has generated when the program crashed KSP.LOG: http://pastebin.com/WHMpDKL0 Player.log: http://pastebin.com/huS7XENL A detailed list of system specifications: At the top of post. Thank you.