Thanks for the reply! Every time i donwload the DEF, it just downloads as a .zip file. Is there any possible way to make it an .scs file? If this is the problem, i still dont understand why it would work in SP but not MP.

Just installed the newest version of promods and it works completely fine in SP, but when i start it in MP it says i have missing files.
The attachment below shows what my mod folder looks like.