rtmp not connecting

Hello, I get the following error in localhost on my Windows 2008 r2 server:

Error: cannot connect to Flash Media Server! Error code:NetConnection.Connect.Failed

Also rtmp can't connect from any computer, for playing or streaming to the server. All necessary ports are open and confirmed working via http://www.yougetsignal.com/tools/open-ports/ and the server was configured properly as far as I can see. It plays vod fine via http. Everything including rtmp was working on this server until it was reformatted a few days ago

Thanks for any suggestions