Endnote frozen syncing

Hi everyone

My college uses endnote version 6.

I have it set up to run on both the colleges computers and my own laptop.
While I was using the colleges computers, I added some notes to some PDF’s using endnote. When I got home I tried to sync my laptops version of endnote so thet It recieved the changes.

Unfortunately its frozen at retrieving and gets no further, everything else seems to work okay though.
I tried restarting my laptop but it doesnt fix it.

Any advice would be greatly appreciated

EDIT: Just realised its version 7

X7?  (ie 17)  on both computers?