I started a thread ( SU21Pro - Changes in Scene Settings Crashes SU - SketchUp / Pro - SketchUp Community)about this a while back as I am having the same problem. If I update the scene and select a new scene directly after interacting with the scene window, SU crashes. If I select the anywhere else or rotate the view, it is usually fine.
My windows are on a different monitor and do not function unless I close all of them and reopen each one for each session. Unfortunately, I will not share the file even though I was assured that Dave would respect my (NDA). Sharing the file would be me not respecting my clients wishes and a breach of confidence that I am not willing to commit.