Plugin for exodus client

Hi,
	I'm developing a plugin for the Exodus client version 0.8.6.56 using MS Visual Studio ATL. I've implemented the interface for IExodusPlugin using CLSID "DCDFAD67-6CB2-4202-B29C-50D633C02596".
When I choose "Tools |options | Plugins" Exodus can see my plugin but won't load or configure.
I get Errors
"Plugin could not be created..." followed by"
"Plugin could not be initialized or configured.." 

The only difference I see is that the MS IDL compiler won't allow the construct
"HRESULT Startup([in] IExodusController*  ExodusController);"

So I'm using 
"HRESULT Startup([in] IDispatch*  ExodusController);"

Using OLE view my Component looks OK, It matches plugin ExAspell and that 'seems' to load.

Any assistance much appreciated
-Fred