If this is caused by the registry permissions issue (which is common on Citrix/terminal server), then you will need to get the IT guys to make the registrry changes or, make everyone administrators, or stop using VBA.
I have had other sites complain about changing the registry, but that is what is required.
I cannot say what has changed, maybe these are new Citrix machines and the changes which were made previously have been lost.
David Musgrave [MSFT]
Escalation Engineer - Microsoft Dynamics GP
Microsoft Dynamics Support - Asia Pacific
Microsoft Dynamics (formerly Microsoft Business Solutions)
http://www.microsoft.com/Dynamics
mailto:David.Musgrave@online.microsoft.com
http://blogs.msdn.com/DevelopingForDynamicsGP
Any views contained within are my personal views and not necessarily Microsoft policy.
This posting is provided "AS IS" with no warranties, and confers no rights.