Steps to reproduce :

- open Unity 4.2 using the free license ( Help > Manage License > Return License )
- import Angry Bots and make sure the Angry Bots scene is opened
- open Unity 4.3
- after the project is opened Unity will crash

*Note :
If the crash does not occur right after upgrading then close Unity and reopen it, making sure the Angry Bots scene will open by default.
Regression from 4.2.
Only reproes with Unity free.
The workaround is to start Unity in OpenGl mode using -force-opengl