MacOS: Not every changed key is working after restart

[neoncortex]

Hi,

first of all, even is this beta state this picture browser / viewer is one of the best (for mac) i found so far. I have only a little problem about browsing pictures. I changes the next file / previous file keys to Right and Left (the arrows) after changing it worked flawlessly. After quitting and restarting the keys are listed as Left and Right in the settings but they are not working anymore. Every other key i changed was working after the restart without problems.

I'm using MP 0.21 on SnowLeopard

Greetings
Dennis