So the paths were listed as "???", which I had just assumed was because another path split was coming up and the saves didn't know what to list. I didn't mention it to begin with since 2/3 of the massacre saves I loaded with "???" worked (Both Oswin/Sal live and Both Oswin/Sal die), so I wasn't sure whether it had anything to do witht the error. I'll try starting that path again and see if that fixes it.