Two Custom Control Classes in 1 Class Library

VB.Net does not seem to let me add more than 1 custom control into a dll.

My first custom control inherits from TabControl and implements a couple basic function. My second custom control is defined simply as:

Public Class Class1
Inherits System.Windows.Forms.TabControl
End Class

I can add both controls to the tool bar, but when I drag this one, it does nothing - no control is drawn on the form.

Any ideas?

I recreated the DLL with the 2 controls and it works fine. Guess I found a bug somewhere.