Error Adding Active Directory group to Windows 7

Hi,

I got an error when adding AD group to windows 7 SP1 local admin group.

"Windows cannot process the object with the name "XYZ"  becauce of the following error:

Name translation:  Could not find the name or insufficent right to see name"

I am the DA/EA of my 2008 AD.

The group "XYZ" was created by me.

I can see the group when select users or groups, but when click on it, I got the error above.

No error in Eventviewer on Domain controllers.

Active Directory environment:

Windows 2008 AD.

Thanks in advance.