I'm installing a new machine and am having trouble with one Setup screen - specifically, the "Recording and playback" Setup screen. When I enter I can see lots of lines of settings but pressing the up or down buttons has no effect - it won't budge from the first item ("Default movie location"). This is weird because I have no trouble moving up and down in the other Setup screens and changing settings as I see fit. Just in this one Setup screen it will let me edit that first item but won't let me go to any other lines to change them.

Could it be that there's a problem with my "Default movie location" and it won't let me move on until that's fixed?

Thanks for any help.
Dan