I'm trying to pass a class as a parameter to a method on a
transactional component and I keep getting this error:

 An unhandled exception of type
 'System.Runtime.Serialization.SerializationException' occurred in
 system.enterpriseservices.dll

 Additional information: Cannot find the assembly WPInterface,
 Version ...

The assembly it supposedly cannot find contains the class I am trying
to pass as a parameter.  The class I'm trying to pass is marked
[Serializable] and implements ISerializable and the special
constructor.

If I use a string parameter it works without a hitch, but I really
need to pass more information.  I originally tried to use a struct but
got the same message.

I'm just getting started with Enterprise Services and haven't figured
out all of the nuances.  The assemblies all have strong names.  I'm
using "lazy" registration and deleting the COM+ application before
each build.  Please let me know if this makes any difference or if
there is something else I may have neglected.

Any ideas?

Thanks,
 Bill