Then check that the directory you want to play GTA from is called, 'Grand Theft Auto V'. This problem has to be nothing with your internal files, just the game is booting up wrong. If you use steam, you must rename the directory so that steam boots up from the right place.
On the other hand, there has been lots more ragehookplugin updates, so try updating your RHP.
It might be compatibility issues, but im no expert. Try updating everything. RHP, and plugins if they need.