Hey Janelle, I just took a look in my logs and noticed that I do not get the same error message anymore. Though the symptoms are identical to before I no longer get the timer error.
Instead I got this:
Nivå Datum och tid Källa Händelse-ID Aktivitetskategori
Fel 2008-02-19 09:13:44 RemoteAccess 20106 Ingen "Det går inte att lägga till gränssnittet {7365A884-394A-4528-BF98-812FEA181B52} med routerhanteraren för protokollet IPV6. Följande fel inträffade: Det går inte att slutföra funktionen.
"
It basically says: "Cannot add interface {...} med routermanager for IPV6 protocol. Cannot finish process."
I also get a warning about having too many certificates which is really strange as I have never added a certificate manually and I only get that warning AFTER having installed SP1. (The warning says that my list of certificate is too long and could be truncated, I should remove those I don't need. Since I never added any certificates I haven't really bothered removing any, if needed I'll try to just get some of them off the list.)
Here's what I did:
Step 1: (PC)
I removed the following certificates:
Remote Desktop: host certificate.
MCX: Xbox 360 certificate.
Personal: Windows Media Center Extender certificate.
Step 2: (PC)
Removed the MCX user account.
(Both from "user accounts in the control panel and from Media Center)
Step 3: (360)
DIsconnected the 360 from the network.
Disconnected the MCE client in the 360 setup.
Removed the Media Center application from the dashboard in the 360 setup.
Shut down the 360 and reconnect it to the network.
Step 4: (PC)
Restart the computer.
Step 5: (360)
Start the 360.
For whatever reason signing in will take FOREVER now.
When signed in I confirm connectivity (Xbox live and media).
Step 6: (PC/360)
Run the Extender setup on the 360.
Sign up the key, press continue on 360.
Note the key on the PC and then start running.
The MCE driver will install (correctly).
The PC will configure computer settings, seek and find an extender, configure the extender settings and specify media locations.
But it always fails the last step "Connect to the extender".
When the PC "arrives" at tha last step of the setup the 360 will immidiately spit out "Connection Failed".
Step 7: (360)
Do ask the 360 asks and restart. Doesn't make a difference.
(However signing in to my 360 gamer tag is now instantaneous again.)
Step 8: (360)
Try to stream media through the ordinary 360 interfaces and it works like a charm still.
I also have some photos and a video of the whole process, if you need it just let me know. It's about 5 megs of data all in all.