I've noticed the following problem ever since I upgraded to the 1.8.0 prerelease version:
If I go to the playlist screen and listen to the first episode in the list, when the episode finishes, a NullPointerException error occurs when PT attempts to move on to the the next episode in the playlist. I see the episode I just finished be replaced by the next episode in the list (in the Currently Playing area) and then the exception occurs. If I acknowledge the error and then select play it'll begin playing the episode that it should have moved on to automatically.
I'll send the log via e-mail.
Thanks,
Gordon