I have posted somewhere else and I was told there was an update for GTA V within the last couple of days, since then people have started getting errors with LSPDFR.
As for the mods, my game worked fine with LSPDFR 4 days ago, however I then installed a mod which crashed my game, so I downloaded the game from steam again as I was stupid and didn't have a backup copy, so it was a clean install of LSPDFR and now it is crashing my game on the loading screen.