I have everything I need for this mod, saw the other posts like mine but none were helpful. I have the latest GTA 4 game, mine was downloaded from the gamestop website under 2k games. I can't use the G17 diagnostic analysis either because it closes itself down whenever I try. I've tried everything with administration and compatibility.

I have fully installed LCPDFR and it says everything was successful, go in game and press ALT+P. When I do nothing happens.

Please help, thank you.

The diagnostics tool should still run if you are running as administrator.

Either way, few people have had any luck with LCPDFR and the 2k Games copy. Most people who have it have found that buying the game again from somewhere else was the only solution to running the mod. I don't know why but that version always has problems with either mods in general or this mod specifically.

reinstall it that's what i would do

try putting the diagnostic in the folder with the game files then running it