try re-verifying your game version through steam by opening steam>click GTA V in library>settings of the game>properties>local files>verify integrity of game files
let steam run the 2 tests and then it should update. it will probably say something like"cant verify the integrity of 8 files, files will be automatically fixed" click ok and it will update. It did for me. then make sure you update RPH and LSPDFR. ScripthookV is still not released so ELS and a multitude of other .asi programs will not operate until the patch for scripthookV is released sometime this weekend.
Hope this helps!
Message me on discord and join my discord if you need more help https://discord.gg/MBmpExh