if you get "incomplete installation (3)"
... then be sure you alt-tab to find the WinFail "Are you sure you want to do this thing you just told me to do" confirmation screen and accept.
Took me 20 minutes to figure it out, but that was what was wrong for me.
I see no such dialog. I had the files preloaded; the patch downloaded fine and my files unlocked. Upon clicking Play and selecting, yes, Play again I see
for a minute or so. I minimized all other windows so I could see if something popped up. It sits there for another minute and then says it couldn't complete installation (3) which the support says is due to network connectivity.
Even though my router doesn't block outbound traffic and I've never had any trouble with any Steam games, I set the router to forward all the ports listed inbound to my PC. Still nothing.
Oh, I see now that the Steam network itself is down. Awesome timing.
This is a common problem right now guys, check this thread for updates from the Steam admins themselves.
Last edited by nismogrendel; 09-20-2010 at 10:40 PM.