I am trying to create a COM object library that is language independent. So that other developer can use it in orther developing environment like VB 6.0 or C++, it can be built successfully, however, when I try to add it to VB project, it does not allowed to add. The err msg is "Can't add a reference to the specified file". Can anyone help? Thanks a lot.
The code in VB.net Express like the following:


Imports...