When I go to the managed workgroup under "SoM/Add Computer", I get "The specified server cannot perform the requested operation."  This is an existing managed workgroup that I have added PC's and installed agent's through in the past.  I have the most up to date build which I just installed hoping to fix the issue, to no avail.  My DNS is resolving appropriately.  Any thought on where to look next are greatly appreciated!

-ddub :)