So in WaW custom maps that I download aren't showing up. I even made a 'mods' folder in the Activision one and tried installing maps again. That didn't work either. I tried launching maps from the map launcher and console that also didn't work. Custom maps used to work fine and showed up under 'mods' on my other PC. Any idea why it isn't working?

The mods should be installed in the Thispc\Local Disk(C:)\users\YOUR PC NAME\Appdata\Local\Activision\CodWaW\mods\HERE