Inherited Forms

I am trying to define some template mdi child forms that are inherited by the actual mdi children.

As I wished them to be pure abstract classes - that can only be used if inherited, I set them as "MustInherit" classes.

However I found that when I was trying to add a form using the "Add Inherited Form" menu item - the form declared as mustinherit doesn't appear in the list.

If I take the MustInherit off though it appears. This seems strange to me, especially as I specifically want it to be an abstract class. (I also wich to declare some of the methods as mustoverride, but can't unless the class is mustinherit).

Am I missing something? (please dont be rude)

Thanks