When I pull someone over and I go back to their car to talk to them after searching their Drivers License, or when I initially pull them over with 'shift'; if they decide not to pull over or run away then i get a script error crash and LCPDFR no longer works for the rest of the game. Also there is no way to end that traffic stop, even if the guy dies there is still a red dot on the screen, plus none of the actions in LCPDFR work anymore after that.

press the ` key to open the console, then type reloadscripts this will start LCPD:FR up again. Unfortunately LCPD:FR is not a fully stable build, but they are hard at work on this.

so this is a known issue?

Do you have any other mods installed that might be conflicting with LCPDFR? If Yes, try uninstalling them. If LCPDFR works after that, try installing them one by one and testing them out so that if you get an error, you know what's causing it.

If no, try re-installing LCPDFR and seeing if it works.

I have no mods that confluct with it, and i tried reinstalling like three times

also reloadscripts reloads everything excpet lcpdfr so i cannot pull people over until i restart the game after a chase

reloadscripts reload's everything, once reloaded you will have to press Alt+p then Ctrl+P again to get back on duty. There is no way to reload an individual script (none that I have found), again this is a non-stable build, post the crash details, it might help us find your problem ScriptHookDotNet.log should have the error in it.