Third hotfix for 0.15

Third round of fixes and improvements.

Bugfixes

• Fixed crash when rendering shapes with invalid details numbers

• Fixed initial window size of scriptAIManager

• Fixed autobello thumbnails

• Fixed custom groundmodel not being loaded

• Fixed Some utility function using default userpath instead of actual defined userpath (may have fixed issues inside the torque3D editor)

• Launcher: Fixed open dialog failing to open on some specific configuration

An up to date list of known issues can be found in the dedicated Feedback & Bug Reporting Thread here. Instructions on how to update the game here.