During configuration of the XBOX media center extender I get the following
error duing the 'Configuring Extender Settings' step.

Windows Media Center Extender setup failed with the following error code:
-209.

This happens after about 2 minutes of inactivity during the step.

The Event log entry that immediately preceeds this is:

Windows Media Center Extender setup successfully configured the Windows
Media Center PC for use with an Extender.

Configuration: Vista Ultimate, XBOX 360, wired network. Windows Firewall only.

I have tried turing the firewall off with the same results.

Any suggestions would be helpfull.

Thanks.