I used the Iw4m installer then I try to run the game it says. The program can't start because iw4m.dll is missing from your computer. Try reinstalling the program to fix this problem. But I have already reinstalled it can I please get help

Search and delete "caches.xml"

It should be located on

%localappdata%\IW4M\

Then start the game again.

Omg dude thank you. You are my hero. Thank you so much