The thing is I can't re-extract them, 7-Zip gives me an error message each time that they can't be opened as archives.

When I tried this it told me the files cannot be opened as archives. Should I just re-download Promods then?

I only have Promods installed and in a few spots on the map there are crashes, sometimes it crashes if I try to create a new profile. ************ : log created on : Wednesday July 10 2019 @ 12:33:36 00:00:00.000 : [sys] running on x86_64 / Windows 10 x64 (version 10.0) 00:00:00.000 : [sys] DirectX ...