microSD card deleting randomly

All files stored on the microSD card are being deleted by the Express player at seemingly random times, most probably on boot-up.  Completely wiped out.  Has anyone else experienced this?  Is there a fix?  I have the latest firmware and it did this with the previous firmware also.

What’s interesting is that there is a single DevIcon.fil file sitting there with the file size of all the files that were on the card before they were removed.  Again, it is the player itself that is doing this.

Nothing like a reliable data storage product, eh?