Today i got on to play a little SP to help me get my mind off of a lot of things. So, i open SP, then when i get into sandbox to build, everything was gone but the GUi. Nothing on the GUi worked and none of the Log-Out shortcuts for my computer worked. The only way i was able to exit SP was to Power off my Mac and Reboot it. If you were wondering, I downloaded SP off of the App Store on my Mac and am currently running OS X El Capitan version 10.11.6

I am also running SP 1.5.2

Please Help AndrewGarrison! Or anyone!