Perspective viewport

Hi, when I click on the shade/shade viewports in rhino, the model in the perspective mode disappears while the rest are still there and shaded. I can’t find out what is the problem! Please help! :frowning:

add a capture or upload the file. can be anything from here.

Hi - more information would be good, yes.
Is this file-specific?
Please run the rhino SystemInfo command and post the result here.