Mike Graham

Here is an excellent description of the deployment catalog including information on how to create a XAP that references assemblies, but does not include them (copy local = false).

http://mef.codeplex.com/wikipage?title=DeploymentCatalog&referringTitle=Using%20Catalogs

The main caveat is that a XAP that does include these assemblies must already be loaded before loading such a XAP (otherwise when MEF enumerates the contained types, Silverlight will throw an exception about the assembly or referenced assemblies not being loaded).

All of this is AWESOME...

Question: is there a way to avoid downloading assemblies that are already included in the base XAP or in one of the dynamically downloaded XAPs?

Related Question: can I now (in Silverlight 4) enumerate the assemblies that an assembly references?

Excellent work...  MEF looks amazing...