Hi,
We would need to see your log files from both machines.
The logs are located at
Mac:
The log file can be found here:
<Mac Hard Drive>/Users/<username>/Library/Application Support/Adobe/CoreSyncSync/CoreSync-YYYY-MM-DD.log
(where YYYY-MM-DD indicate the date of the last log)
Note: The Users Library user folder is hidden on starting with 10.7 or later
see http://helpx.adobe.com/x-productkb/global/access-hidden-user-library-files.html
Windows:
The log file can be found here:
C:\Users\<username>\AppData\Roaming\CoreSync\CoreSync-YYYY-MM-DD.log
(where YYYY-MM-DD indicate the date of the last log)
Note: The AppData folder is hidden by default this doc shows how to show it if needed
http://helpx.adobe.com/x-productkb/global/show-hidden-files-folders-extensions.html
Please zip them up and send them to SyncForum-Communication@adobe.com
Thanks
Warner