System Information
Operating system and graphics card
Win8.1 64
Core2 Duo T6600, 4650M radeon
Blender Version
2.75a
Short description of error
Black screen occured after using node editor and switching to 3d view in Blender render.
This have never happend before.
https://dl.dropboxusercontent.com/u/13451287/plasma.blend
https://dl.dropboxusercontent.com/u/13451287/bug.png