mp4 on Link Station LS-XH2.0TL played on Sony S-790 reported as MPEG and corrupt or unsupported

[PC]

My Link Station LS-XH2.0TL with Firmware 1.60 has video files that are in the mp4 format. When I attempt to play the files over wired and wireless ethernet on my Sony S-790 DLNA player they are reported as being an MPEG file and as being corrupt or unsupported. I copied a file from the Link Station to a USB HDD and connected the USB to the Sony player. The file is recognized as being mp4 and plays fine. I then connected the USB HDD to the USB port on the rear of the Link Station, rebuilt the file system and tried to play the same mp4 file through the Sony. Again the file was reported as being an MPEG and as being corrupt or unsupported. Thank You.