I have already tried this: Try running your game with NOTHING but LCPDFR. If that works, install your mods one at a time, then run the game for a bit to make sure it works, then proceed to the next. That way, if something errors out, you know exactly which mod is causing the problem. If it doesn't work with just LCPDFR, try re-installing LCPDFR or running it without the mod. If that doesn't work, try re-installing GTA IV and running just the base game to make sure the game itself isn't causing the problem.
however i will try to run script thing in game, let you know...
kind regards