So, I thought I'd do another extender setup. I followed the following advice twice with no luck:
Any other ideas? Xbox seems to work fine but each time I try to add an extender I get an "extender setup configuration error".Method 1
Remove the Media Center Extender certificate. To remove the certificate, follow these steps:
Click Start, type mmc in the Start Search box, and then press ENTER.If you are prompted for an administrator password or for confirmation, type the password, or click Continue.
On the File menu, click Add/Remove Snap-in.
Click Certificates, and then click Add.
Select Computer account, and then click Next.
Select Local computer, and then click Finish.
Click OK.
In the Navigation Pane under Console Root, expand Certificates, expand Personal, and then click Certificates.
Right-click Microsoft Windows Media Center Extender Host, and then click Delete.
After you remove the certificate, uninstall the Extender, and then restart the Extender setup.
Method 2
Restart the Network List Service. To do this, follow these steps:
Click Start, type services.msc in the Start Search box, and then press ENTER. If you are prompted for an administrator password or for confirmation, type the password, or click Continue.
In the list of services, verify that Started appears under Status and that Automatic appears under Startup Type for Network List Service.
If you have to modify the settings for the service, double-click the service, make the adjustment, and then click OK.
Restart Extender setup.