I still don't understand why people download crappy mp3's from websites and pay virtually as much for them as a CD, which you can rip and transfer to your mp3 player at any desired bit-rate, AND still have a full 16/44 copy on a durable medium.
One simple A/B comparison of the CD to the mp3 through decent speakers or headphones, and you start to realize what you are missing.....
Anyway, back to your problem..... Can you play the individual mp3's no problem, just the playlist that screws up? If so, just create a new playlist....
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An arranger is just a tool. What matters is what you build with it..!