I went into a new world without too many items, and it seems like the issue is solved. I then re-enabled it just to check, but then everything was still fine. My guess is, and I know this might sound dumb, but too many items trying to save a teleport spot through different worlds? I almost never use the teleports, apart from when I'm testing things out, but I guess when I disabled it, it cleared the teleport saves or something? Again, that's just a guess that I'm basing off of what the .dmp file says about the teleport saves. I'm almost completely sure it did have something to do with the rooks, but now I'm also convinced it had something to do with the teleport saves. The .dmp file mentions the teleport saves, but also an invalid shape type, so it could be one of them, or both. Regardless, it seems like everything is all good now, thanks for your help!