Can't reliably play playlists on Sansa e250

[comporanger]

I'm running the latest version of RockBox on a Sansa e250. I use MediaMonkey to create and sync a playlist to the Sansa. I boot the player, go to playlist catalogue, and select one. I am then presented with my playlist. I select the first song; for a fraction of a second the player appears to start a song, then it will stop and revert to the playlist catalogue screen. Has anyone had an issue like this or any idea what might be causing this behavior? There is also a certain randomness to it, as sometimes the player will go on through the playlist without any problem. Could improper tagging of mp3 files cause it? Any thoughts would be appreciated - thanks in advance.

[saratoga]

If the files referenced in the playlist aren't actually present they'll be skipped.  If the playlist contains no files that actually exist you'll see what you described. 

[comporanger]

I understand - the thing is, the music files are there, and I can see them on the player when I browse through the folders. It's as though the playlist can find the files at first, and play through without a problem. Then suddenly it will start acting as though there are no files there, as you were saying. Sometimes a reboot seems to help. Is my hardware unstable or something?