8112 - Unable to enable "Pass-Thought" Authentication

8112 - Unable to enable "Pass-Thought" Authentication

Hi all,
 
I've read so much about this yet I still can't get it to work!
 
I have set my domain name, DNS server, Bind Sting, DNS site and manually created a Computer account called sdpntlm however when I enter the password which is password and hit save, I'm getting the attached errors.
 
I have tried running the scripts provided however they don't seem to be working.
 
Can anyone help?
 
Thanks, Chris.

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