Image WIM, cannot create Catalog file in BDD

Hi,

We are trying to use BDD2K7 with images stored in a WDS Server (NativeMode)
on W2K3 SP2,

ANd when we want ot create a Build, it says that there is no Catalog file,
do you want to create it?

We say yes, and we get this error:

Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleRe turnMessage(IMessage
reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateI nvoke(MessageData&
msgData, Int32 type)
at
Microsoft.ComponentStudio.ComponentPlatformInterfa ce.ICatalogCreator.CreateCatalog(OfflineImageInfo offlineImageInfo)
at Microsoft.ComponentStudio.CatalogGenerator.CreateC at(ProgressDialog
pd, Object o)
1:53 PM :
1:53 PM : There was an error generating a catalog file for image Image Vista
in Windows image file \\wds2\reminst\Images\Techpc\vistasyl.wim.
1:53 PM :
1:53 PM : System.ComponentModel.Win32Exception: The request is not supported

Any Idea?

Many thanks!