My Sandisk V-Mate DVR won't stop recording

I actually saw a leftover filename on the TV screen under V-Mate’s “Play Video” (I think that’s the top menu item), that was not on the micro SD card I had in the V-Mate.  It was a file that I had recorded previously to a Memory Stick!  This must not be an orphaned file cluster, as it’s something stuck in the memory of the V-Mate itself.  I forget how I deleted it–either using the V-Mate’s remote, or else I unplugged power.

I have the most trouble with micro SD cards recorded for a Sandisk Sansa Connect MP3 player.  On a completely fresh card (after formatting using the HP USB Disk Storage Format Tool), recording will work.  The next time, it’s hit or miss, usually miss, whether I deleted the previous video file using the V-Mate or the Connect’s on-player delete command.  Maddening, in that I often see the new video filename on the V-Mate screen, and can even start playing it on the TV using the V-Mate.  But the Connect just won’t see the file.  So I always run the HP format tool.