Downloaded fresh 0.17.74 from website, unzipped and loaded this save, no error. Synced mods and loaded save again, no error.

Looks like this may be related to the copying of files back and forth, not sure if the thumb drive is failing or what. Disregard, I guess?

Here's the save. (Sorry, I should have known to post this initially, I work in sw dev myself ugh.)

https://drive.google.com/file/d/1CWPwfV ... sp=sharing

Playing the Windows, non-steam version, 0.17.74 (from autoupdate), with mods. Worked on my base over the weekend, saved this morning and copied the save (actually the entire game folder) to portable disk, brought with me to work to let it catch up on bot build tasks. Failed to load current save (msg ...