i face this on HDPRO. Copy folder over LAN. Suddenly the network place went missing. Windows pop up a dialog about this. After this.. the problem is the folder never get deleted. using PC over network, using hdpro interface, connect hdpro as usb hdd.

however, i found a way to fix this. run chkdsk /f while connect hdpro as usb hdd. It will found issues and try to fix this.

but there is a side effect on this... some random of the files become 0kb. this files include the files that were copied while the network went missing happen and files that is already in the hdpro hdd which is good and copied in long time ago.