I get a popup window that says 'Member not found' every time I try and Edit Definition or Delete any of the mesh controls in an assembly. After clicking OK, I can no longer right click on any of the mesh controls, nothing happens. It was working fine a minute ago, meshing and solving no problem. starting this error from out of nowhere. Rebooted, same issue.

Update: After closing error popup window, can't right click on anything in analysis tree in any study. tried rebuilding, switching between configurations, still cannot right click on anything