The following error usually means that some other program is listening on the HTTP port (80).
(OS 10048)Only one usage of each socket address (protocol/network address/port) is normally permitted. : make_sock: could not bind to address 0.0.0.0:80 .
In my experience, IM (chat) clients like to connect to port 80.
From a command prompt, (cmd.exe) run the command:
netstat -an
See if there is a listener on port 80 (Look for a line that says:
TCP 0.0.0.0:80 0.0.0.0:0 LISTENING
=== ====
the important thing being TCP and 80. If you find something, you'll need to track it down using something like TcpView