Oftentimes, if I start a new game, and then start another new game (a relatively common occurrence since I'm trying to do a challenge run involving something from a mod that doesn't always spawn on any given map), I am unable to save in the new game. I get a message saying "Failure to Save", and then a very long error in font that's too small to read (and as far as I can tell doesn't have a way to copy/paste it).

Any ideas? It might be something relating to my mods - I can't tell because the error text is very difficult to read.

(I took a screenshot of the error message but can't seem to paste it into steam discussion >_<)