expunge problem with endnote 7


I am trying to use the endnote 7 shared library sync function and I get the following message. I reviewed previous messages in how to and noted that this problem arose when there were challenges with version control but I am using the most up-to-date version of endnote.  Any other suggestions? 

I am getting quite a few error messages saying “this reference is already expunged”. Is that related to the sync problem?

Thank you

Sync Details
Sync was last run: Friday, December 29, 2017 at 12:18:14 PM -0500
Sync Status: There are changes that need to be sent.
Error Code: Server.invalidInput
Error Message: Server.invalidInput - This reference is already expunged

Local Sync Library
Library Name: [deleted for this message only]
References: 4443
Groups: 54
Group Sets: 7
Attachments: 2193
Username: [deleted for this message only]

Online Sync Library
Serial Number: Not applicable
References: 4369
Groups: 54
Group Sets: 7
Attachments: 2099 (2.98 GB)

Sync Limits
Number of References: 1000000 (995631 can still be added)
Number of Groups: 5000 (4946 can still be added)
Number of Group Sets: 5000 (4993 can still be added)
Attachment Storage: Unlimited

Please contact Technical Support directly

1-800-336-4474 option 4 then 1 or


You will need to create and send back log files so that error message can be resolved.