Problem:
When opening Tecplot 360, the initial Tecplot window appears, however Tecplot appears to “hang/freeze” on a grey screen.
Solution:
Apple is no longer supporting X11 (Apple’s version of the X server). Thus when you start Tecplot the application seems to freeze on a grey screen. In order to solve this issue we have found a couple of solutions.
1-The first solution to this problem is to run Tecplot in –mesa mode via a Terminal window. This will of course exclude the use of your graphics card.
2-The second option is to download the latest version of XQuartz (2.7.4). Once this is done you will need to either remove X11 from your system or set XQuartz as the default application (this is asked during install). Once the install is complete you will most likely need to restart your computer or log out and log back in before the changes take effect.
Apple has recently posted on their support page some more information on the reason for the change.
http://support.apple.com/kb/HT5293
The latest version of XQuartz can be found here:
http://xquartz.macosforge.org/landing/