Editor Classifier in VS2012 Isolated Shell

Hi,

I've followed the steps described here:

http://msdn.microsoft.com/en-CA/library/ee524005.aspx

Except that I've created an EditorClassifier instead of an EditorMargin. The problem is that it doesn't work.  Any clues?

I've tried all the other templates (TextAdornment, ViewportAdornment). Only the EditorMargin works in the isolated shell.

All projects look very similar so I'm wondering what is going on...  I see nothing special in the activity log.

Thanks in advance,

-Martin