Currently using firmware REV: PA21_1.2.4.6 with a 320GB WD 2.5 Drive. Only 30% of the drive is being used.

Upon trying to upload any file, I get the following error: Album Error: User denied access - (null).

I am able to connect and download and play media files but cannot upload any file whatsoever.

Would appreciate any direction as to cause and or possible workaround.