i can't hear any voices, neither in sp nor in coop. The console says that there are all scene files missing. Could any one upload it?

Btw, when i create a map:
In Hammer editor it says : (Error playing)
when i go ingame then i can hear something like: No [blablabla], what now?

But for the record, no, nobody is going to upload these files for you. Doing so is against the board rules - specifically not distributing copyrighted content.

tin-hay wrote:
I have had this problem with L4D2. Fully remove the whole game from your computer, every single file. and re download from steam.

I honestly doubt you need to do this. There's a reason the "Verify Game Cache" feature exists; it checks all the game files on your computer to a master copy on the Steam servers and replaces any that don't match exactly. In effect it redownloads any non-matching files, which means it basically provides you with a new clean copy of the game.

And takes a heck of a lot less time.

WinstonSmith wrote:
.... In effect it redownloads any non-matching files, which means it basically provides you with a new clean copy of the game.

And takes a heck of a lot less time.

Had to do it twice, after verifying the content. One with L4D2 when the smoker data was corrupted, and once with Portal 1 when the game refused to give me the transmission achievement.

With the L4D2, I just totally deleted the smoker data, as when i verified it, it did not see it was damaged. As for Portal 1, I have a fast internet connection, Got it in 5 minutes.

Data is very finicky. For instance, CD and DVD copy protection. Your burner sees the copies are exactly the same, but they are different.