Endnote XI - Hidden group list mystery

Hi  I was wondering if anyone can help me - I have made several groupings,  but a couple of them do not show any references after i dragged heaps in!, Yet at the bottom  left corner it says it has 50 or more references in the group.  I cant make heads or tails of it.



This sounds similar to the issue addressed in this thread.  have you patched X1?  Windows or Mac machine?