WMC Extnder for xbox unable to keep Connect to WMC PC.

I think this problem has been talked about before. Basicly what happens is
when the xbox remote's into the PC, it has some type of error, and this is
entered into the event log on the pc :

Unauthorized window was detect while running the Media Center Experience,
"Media Center", with file name ".

What I did to test to see if I had any popup or anything that needed to be
configured I created a second test account. And logged in. It came up clear.

Software that I don't have installed :
MS AntiSpyware
MS messenger/msn MEssenger
Any Anti-Virus software

This is a clean install, with only WMC installed on pc, and the extender
software.
I've also went into the registery and looked under MCX1 account for anything
in startup/run, and there wasn't

 

Do you have a dynamic drive (e.g. spanned disk) or any FAT32 partitions?
Also, is your Media Center PC joined to a domain?

 

Yes, I discovered that upgrading from basic to Dynamic drive causes the
problem. But I had to re-install everything to figure it out. So far so
good. But I'm scared to even use my computer thinking it's gonna break.