Hi,
Have now fully updated my Windows 10 to include the 20H2 Feature Upgrade and Shape Viewer is STILL working OK
I have now to update various programs and add software which wasn't in my previous installation, but I won't be rushing into it!!
Thanks, jiggywatt, for the file. It does seem to be different to the others I've tried, so I'll store it somewhere safe in case this problem strikes again!
Cheers,
Ged