I'm having issues with the main button in the upper left hand corner, the green one with the logo. This is with 3DS Max 2013 x64. Random times during the day it's unable to be selected/clicked. The other menu selections works without any issues (Edit/Tools/Groups/etc). I have tried reinstalling the latest service pack for the software, repaired installation for .net framework 4.5.1, updated to the latest updates for Windows, and updated the video card drives to the latest version. I'm hoping to get suggestions or if anyone knows what that button is dependent on (.net, flash, java, etc.) to point me in the right direction.
PC Specs(Just in case):
Windows 7 64-Bit W/SP1 and latest updates
3DS Max 2013 x64 (15.0 Product Update 6 commercial)
Intel Core i5-3470
16GB DDR3 1600mhz
Nvidia Quadro K2000
Thought I'd follow up in case anyone experiences this issue. I updated the video card drivers, and this appears to have resolved the issue. I will respond back if the issue comes back.