Wireless Network (IEEE 802.11) Policies object

I am trying to extend wireless Schema. I am using artical from Microsoft http://www.microsoft.com/technet/net…ta_ad_ext.mspx but when i run the command on my DC i am getting error message see bleow

“Add error on line 14: Referral
The server side error is “A referral was returned from the server.”
0 entries modified successfully.
An error has occurred in the program
No log files were written. In order to generate a log file, please
specify the log file path via the -j option.”

please help thanks