EXTERNAL DRIVE SYNC FOLDERS CONTINUE TO SYNC AFTER MULTIPLE DAYS

Hello all,

I have an external USB drive connected to my laptop.

I setup several folders to be sync'd to my RN204 and all has been going well for over 6 months now, but all of a sudden, within the v6.7.2 and v6.7.4 upgrade timeframe,  2 of the 4 folders are in this "sync-file fail-sync" cycle. 

The other two folders [on the same external drive] initiallly sync when the drive is plugged in, and a short time later the sync is complete on these two folders.

I have run defrag and heath check operations on the external drive, but all is well according to the reports.

I hae rebooted the laptop, external drive, and the RN204.

Anyone have any idea what's going on?

Regards!