I lately sometimes get this pop up window showing up when opening Rhino. What does this mean?
It looks like this has something to do with ArchvVision:
Never heard of ArchVision, neither do I remember installing this plug-in. Is this something I must have installed myself or does it ship with Rhino?
This will be fixed in the next WIP
This was happening in Rhino 6.
Edit: just got it 2 times in a row with a different file in Rhino 6
Edit: 3 times in a row with different file.
Sorry for the confusion. I think you can just disable the RPC plug-in to avoid this problem.
If you have both Rhino 7 BETA and Rhino 6 installed, maybe do a repair of the Rhino 6 version, and ensure that the RPC client is loaded from the correct location? See the details
link/button in the plug-in manager as can be see in the screenshot from @KelvinC.