Replace or remove problematic files
Additionally, open Regedit (type regedit in Start Menu), navigate to HKEY_CURRENT_USER\Software\Rockstar Games\GTA IV and delete the Settings folder. The game will recreate it with default values. gta iv fatal error vds100
If you’re on and still stuck:
Name it commandline.txt (Ensure it is not commandline.txt.txt ). Replace or remove problematic files Additionally