Problem when playing music

[SubparHans]

When I am playing a playlist, I am unable to modify a playlist or change to another playlist.
Both times I receive an error that reads 'Error Accessing Playlist File (-1)'
It only occurs with some themes.  The default theme and the theme of 'RetroTape' do not have this problem.

I am using a nightly build of RockBox on an iPod Video.
I have tried deleting and resetting the .playlist_control file and the error still persists.

Any help troubleshooting is appreciated.