I am getting the error shown on the picture. Single player version works.
https://i.imgur.com/2jTTRKM.png
https://i.imgur.com/kkNlcEf.png
So far I tried:
Removing .rpf files with incorrect md5 checksum and re-downloading them
Removing non .rpg files and re-downloading them
I hope I won't need to reinstall the full game. I have the Rockstar version, not the Steam one. Any ideas please?