Display Bug in Stealth Game Demo?

Unity Engine
1

Hi,

I am working on the Stealth game tutorial on this website.

When attempting to add a collission mesh to a camera model, the transform part of the display gets blacked out. It only does this with the collission meshes in this paticular folder to my knowledge.

I have tried restarting the computer, using different display configurations from the default (ie switching the windows from default to 2 : 3, tall - different display modes), to no avail.

There is an error message at the bottom of the screen: Invalid GUI clip stack popping

Here is a screenshot of what it looks like.

2

I found a solution - by moving the boundary of the preview box at the bottom of the screen downwards, the black box at the top of the screen was reduced at the same time.