Model turns black - loses shadow

When trying to take a capture my model turns black - it then cannot be reverted. I have tried putting the model into another new rhino file - however this happens again, and is also triggered when changing the glass settings.

Help please!

Jaime

Hi Jaime - Could you please run the Rhino SystemInfo command and copy-paste the result here?
Also, can you reproduce this when you disable V-Ray?
-wim