This mod is filling up the script.dat file to absurd levels and makes the load take forever.

Thanks for reporting this - it was an oversight with the new night attacks only feature, that was still trying to track biter groups even when it was turned off. Uploaded a fix. To get the file size down, please disable the mod, load and then save, and then reenable the mod.

I fixed it already by deleting the script.dat file entirely, hoping it would get regenerated by mods, and sure enough, they did. Thanks anyway.