Metasploit : run bypassuac (Post/windows/escalate/bypassuac) fail.

Hello all !
Sorry but I'm french, so please forgive me for all my mistakes..
I'm running Metasploit framework through Kubuntu and i have learn with metasploit unleashed (Great tutorial by the way : http://www.offensive-security.com/metasploit-unleashed)
I haven't any problem to open a shell and nothing else but the bypassuac script isn't working. I made a video and upload it to 2shared : http://www.2shared.com/file/cPKkEvDx/UACbypassbug.html
All the bug is explained there..

I hope someone can help me !
Squall56

The messages you are receiving says it all...
you are not running as the sysadmin and there for windows asks for authorization,
the second question about sysprep thats a very known tool for automatically deploying...

Good luck,
Cheers

Thanks for your answer Maxfx. But the bypassuac script is made for bypassuac.. And as you can see in Mitnick and Rel1k video : Bypass Windows 7 x86/x64 UAC Fully Patched – Meterpreter Module « SecManiac.com you don't have any prompt on the vista/7 screen.
The 2nd thing : I know what sysprep is. But the question is : Why is he launching ? The bypassuac script never tell any command to call this prog. So i don't know why he's launching. Do you know why ?
I've heard about a new patch (5 August 2011) which prevent this script. But on my Virtual Machine this patch is not installed.
Squall56

Sorry i didn't even look to the name of the exploit you were trying to use :P just to the error messages.
I haven't used that exploit...
I would suggest looking at the code to see how it works and than you should have a answer for why the sysprep is poping up.

Go to the #metasploit channel on Freenode or some other metasploit help. This is a backtrack forum, not metasploit.