Since Sketchup Pro 2021 (v21.1.298) update crash problem

Since I’ve updated to Sketchup Pro 2021 (v21.1.298)

On first Mac…
8gb macOS High Sierra
Sketchup Pro crashes and App closes every time I go to ‘Export’ → ‘3D Model’
On every file, no matter how small.
This is the only function/command in this version of the current Sketchup app on this Mac that crashes the App. The app runs fine in every other function, including saving .skp files, but not exporting.

On my other Mac…
16gb macOS Big Sur
Sketchup Pro does not crash when going to ‘Export’ → ‘3D Model’

Any ideas?

Thanks in advance,