Clientupgradetarget "Out of memory" on Citrix Workgroup Client

Hi

We are running CRM 5.0 SP07.

I've installed the Workgroup Client on a Citrix server running Windows Server 2003

Standard Edition. I checked the Citrix option during installation.

Whenever I try and apply any SAP Notes which require a MUP to be

applied, the following error is displayed by clientupgradetarget:

'Out Of Memory'

The MUP then hangs at 'Reading from Package...' and is never applied.

When I click OK on the 'Out Of Memory' error, the error disappears and

the clientupgrade process ends.

Windows task manager shows 3GB of memory available out of the 4GB of

memory installed.

We do not have this issue when installing Workgroup Client on physical or virtual client machines.

Any help or advice would be much appreciated.

Thanks

Erich