I'm uprading to Plone 4 from 3.3.5 and using webcouturier.dropdownmenu 2.3. 

With Plone 3.3.5 I was able to see content type icons in dropdown menu, but in Plone 4 they are missing. Actually content type icons are missing from every other itmes than content with mime type.
What could do to get them back? 
In Theme Settings, I have "Always show icons" setting on.