Make sure you aren't using a crack - We don't support cracks or people using pirated software. I have not pirated the game.Update GTA IV to 1.0.7.0 (the latest version of the game, or 1.1.2.0 for EFLC) - These patches are needed. I have installed the patch.Make sure that you run the game as an administrator. I do.Make sure that your GTA IV root folder (and every subdirectory) is not set to "read-only" Done already.Ensure that ScriptHook.dll, ScriptHookDotNet.asi and Dsound.dll OR Xlive.dll are in the GTA IV ROOT folder They are in.Ensure that there is a folder titled 'LCPDFR' in the ROOT GTA IV folder. It is in.Check that all the above files exist, if they do not, reinstall LCPDFR with the MANUAL installation. I have tried both.Ensure that you are using up to date versions of every LCPDFR dependency and LCPDFR itself. Already done.Install these: https://www.microsoft.com/en-us/download/details.aspx?id=30653 , https://www.microsoft.com/en-us/download/details.aspx?id=30679 Already done.