I downloaded the "InstallIW4M", entered it, wrote the location of call of duty modern warfare 2 singleplayer but it didn't give me to press on 'Install' button.

What I have to do?

***the location of MW2***

singleplayer

We dont support single player?

Then you probably don't have iw4mp.exe on that folder.

You say that's a singleplayer version? Maybe you don't even have the multiplayer maps...

Install the complete game.