I have moved some workstations after they have been imported in to a
workstation container (so I could move them in to a more relevant
department container).

Since I have done so, only on SOME of them I am able to remote control.
The ones that I cant I receive this message:

"1487 - You are attempting to launch the operation from an obsolete or
invalid workstation object. Verify that the workstation object is

I have looked at the manual and that isnt very helpful at all, it just
says to try and remote the real object

Could anyone shed a bit more light on this subject and to why some will
work and others dont, we are using ZfD 6.5 on XP workstations