Cod4 crashes after installing cod4x

I reacently installed call of duty 4 modern warfare but I was unable to join servers in multiplayer
then I searched up on internet and found cod4x but when I install cod4x the game closed itself after launching the iw3mp but when I uninstalled cod4x everything was working fine. I have already installed patch 1.6 and 1.7

Cod4x is crashing for me as well. It runs perfectly on patch 1.7. But when I install the latest Cod4x patch 21.1 it does not launch anymore. I am on Windows 11.