AutoCAD .NET :: Can't Get Command To Load

I tried applying this flag to one of my commands for Autocad 2006. The documentation states that it forces users to enter the full namespace of the command in order to invoke it.

The problem is that even after defining the local, global, and group names I can't get the command to load. I've tried every possible namespace I could think of when entering the command into Autocad. The command works if I do not apply the flag, and typing GroupName.GlobalName into the command line also works - unless I add the Undefined flag.

[CommandMethod("group1", "cmd1", CommandFlags.Undefined)] _
Public Sub Test()
End Sub