Actually, current version of SyncMate module for Windows is not compatible with 64-bit Windows platforms (http://mac.eltima.com/sync-mac.html
- refer to "Features List" tab, under "Sync with" section).
Thus, it is quite possible that there may be some issues with using SyncMate module in Windows OS 64-bit.
We are currently working on this issue and Windows OS 64-bit support will be added in one of the upcoming releases of SyncMate. I would like to recommend you to subscribe to our RSS feed to be first to know about SyncMate updates: http://mac.eltima.com/rss/en-syncmate.rss
Meanwhile, please, let us know the version of MS Office that you sync with so that we may take a closer look at the current issue.