Passing an array from VB 6 to C# DLL

Hi Experts,

          I have a class in a C# class library.  In this class I have a function that excepts an array of another class that is also in the same C# DLL.
           From VB 6 I can use both classes no problem.  I need to know how to do the following:

dim instancClass1 As CSharpClass1
dim instanceClass2Array(2) as CSharpClass2

Set instancClass1 = New CSharpClass1
Set instanceClass2Array(0) = New instanceClass2Array
Set instanceClass2Array(1) = New instanceClass2Array

Call instancClass1.LoadArray(instanceClass2Array)       '<- I get an error on this at compile time

Error: "Function or interface marked as restricted, or the function uses an Automation type not supported in Visual Basic"

I would appreciate any help on this!