This is a solved problem now. It no longer does the restart thing (or hasn't for a long time). It gives a 7-day pause option too.

The two things that break Windows are spaces-in-filenames, and max-filepath-length. Urgh.

MacOS is broken in a different way: no more 32-bit (so the death of legacy applications) and notarization (need an Apple thumbs-up to run programs).