Lock Pages in memory Security Template Error when adding SQL engine account

I have installed SQL 2012 with SP1 on Windows 2012.  I am trying to enable Lock Pages in Memory.  Following the steps from this article (http://msdn.microsoft.com/en-us/library/ms190730.aspx), I attempted to add the domain account I have running SQL Server Service in the GPEdit.msc, but receive the following error:

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Security Templates 

An extended error has occurred.  Failed to save Local Policy Database.

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Can someone tell me why this might be the case?  Could there be a domain GPO or other security preventing this registration?  

As a side note, I had a similar issue with SQL 2008R2.  However, in that case, I added the domain account to the 'local' group 'SQLServerMSSQLUser$Servername$InstanceName', then I added that group to the Locked Pages instead.  It was a work around, but it worked.  In SQL 2012, this group no longer exists.  What could be preventing the registration of the domain account in the Locked Pages 'add user or group' interface?

Thanks