The game compares the hash sum of all mounted DLC packs against a stored value inside update.rpf. If you manually update x64 dlcpacks without adjusting mpsum, the game rejects the load.
If the error started after a dlcrpf download, that specific pack may be corrupt. Remove its entry from dlclist.xml and delete the pack from dlcpacks\. Test the game, then reinstall a clean version. update x64 dlcpacks mpsum dlcrpf download top
This is the safest way to fix a corrupted mpsum/dlc.rpf. The game compares the hash sum of all
For Steam Users:
For Epic Games / Rockstar Launcher Users: This is the safest way to fix a corrupted mpsum/dlc
If you want law enforcement vehicles, this community produces the highest quality dlc.rpf files with proper lighting and handling.