Counter Strike: Source not mounting.

I have installed Counter Strike: Source and launched it/played it at least once, never had this problem before, but the game simply doesn’t come up on the list of games to mount in the main menu.

Any suggestions?

Let me guess. You have the folder css inside orangebox? Go into that css folder and pull the cstrike folder so you have orangebox/cstrike. Then delete the css folder as it is pointless.

Uh, no.

Where’d you get the cstrike folder from? How did you download it?

Normal Steam download.

[editline]February 1,2013[/editline]
Nevermind I reinstalled css and it fixed itself, not sure what the problem was.