"md" <mdissel@NOSPAM.home.NETHERLANDS> wrote in message
news:ePH9MVRlEHA.1244@TK2MSFTNGP15.phx.gbl...
> Hello
>
> I've created a C# outlook addin that will get an object from the server
> using dotnet remoting. The addin is marked as Register for Com interop.
When
> i try to cast the returned object into the a specific class, i get
> "specified cast is invalid". The specific class is implemented in a
> (separate) referenced assembly (located in the same directory as the addin
> assembly on the client)... What can be wrong?
>
> It does work from a native .NET client.
>
> Thanks
>
> Marco
>
>

> Without knowing the specifics of what you're doing, the problem sounds like
> you're trying to cast an object to an interface it doesn't implement. Very
> likely, you have an assembly with an interface of the same name that you're
> trying to cast your object to, but the interface it implements is defined in
> a different assembly than the one you're using. This can often be an issue
> with COM objects if you're not using a primary interop assembly (PIA).