Rhino shuts down when trying to activate V-ray

Hi! I’ve got some weird problems with Rhino 6.3.
Whenever I create a clipping plane and DELETE it, Rhino just shuts down and the same happens when I try to open the V-ray asset editor (which was working fine a few days ago)

Please help

I can’t help with V-ray.

And I can’t duplicate the clipping plane issue.
I opened an existing model, typed the CippingPlane command, dragged out a rectangle, moved the CP into the model so I could see it was working, then selected and tapped the Delete key.
No crash.

Can you please describe what you’re doing in more detail or provide a sample file with instructions?