Why can't I see the class members?

I've registered a .NET application for COM interop. (VB.NET 2003, framework 1 SP1)
When I reference the application in Office visual basic (MS Access 2003), I can only see the public classes in the Visual basic Object browser (the VB belonging to Access).
Why can't I see the class members?
Since I'm a VB newbie, I guess there is a simple explanation.
(I did try to show hidden members in the object browser, but it didnt change anything.
I've also inspected the tlb-file with ildasm, which lists all the (public) members fine.
I've tried creating different .NET applications;both add-ins and control libraries, but they all show the same behaviour, i.e. class members not displayed in object browser.
Same behaviour also regardless of form module or class module.)

Thanks for any help,
Anders :afrog: