http://bugs.winehq.org/show_bug.cgi?id=24190
--- Comment #7 from Vincent Povirk madewokherd@gmail.com 2011-03-28 11:32:13 CDT --- IWMPStringCollection has a GuidAttribute and TypeLibTypeAttribute. IWMPStringCollection::Item(int) has a DispIdAttribute. Maybe Mono isn't recognizing that this is a COM interface?