I am trying to open a class diagram on my class and I get the error that it cannot display a class diagram. After I get that error, the darned thing will not be responsive to any "Add New Item..." commands form the menu. If I do a complete restart of VS2005 it works. However, when I add a new class diagram, it will add a blank page and I do not get Class Diagram components in the toolbox, I get a general tab and an HTML components tab.

Anyone experienced this before?