A reference with guid does not exist

When I sync my endnote, it shows “A reference with guid does not exist”. Any one help with fixing it? I am working on Endnote X7 on mac

Shiming

Hello! 

Try what I suggested here: http://community.thomsonreuters.com/t5/EndNote-General/Just-updated-to-X7-and-syncing-shows-quot-a-reference-with-guid/td-p/49629

I do have the same question. Hello isn’t a helpful answer.

Ingrid