After trying a whole bunch of Punk Buster versions and fiddling with a ton of nonsense I figured out a combo of things that work.This archive contains version 3.8 of PB with dlls and config that still supports COD4.Remove the existing entry and re-add a fresh entry pointing to your Steam Call of Duty 4 folder.Don't click the Update Punk Buster button and don't worry if you get an error about updating. Attempt to join the Game Grin server and it should all hopefully work now!"Co D4: Modern Warfare" users have to download it manually.Steam only sells the GOTY edition, so Steam users don't have to do anything to use the Variety Map Pack.
Download this file: mc002301Extract it to:/Users/your_username/Library/Application Support/Call of Duty 4/pb/dll//Applications/Call of Duty 4.app/Contents/Call of Duty 4 Data/pb/dll/or /Applications/Call of Duty 4.app/Contents/Call of Duty 4 Data/pb/Just in case, you need to download these files from evenbalance as well: PB Client v2.301 for Mac Filename: mc002301PB Client A v1407 for Mac Filename: ma001407Copy these files to:/Applications/Call of Duty 4.app/Contents/Call of Duty 4 Data/pb/htm/Users/your_username/Library/Application Support/Call of Duty 4/pb/htm/Finally, download from evenbalanceand move it to:/Users/your_username/Library/Application Support/Call of Duty 4/pb/htm More detail steps if you get stuck on previous steps: You do need to do this manually there isnt an update in the App Store.
Note: Hopefully this post is okay like this, Platinum suggested I post this here for reference, if it needs moving or changing feel free to edit it mods!
Disabling Steam In-Game Community should fix the problem.
I get the launcher run it (admin mode) ,then hit accept and it says first time running needs to check for updates, I click ok, then it just disappears and reappears like 5 minutes later, but when it reappears it instantly crashes.
I don't know what to do so if anyone else has this problem or any ideas about it please share.