Man, haven't had that one yet.

Before you reload the OS, try a 'Reset' instead. I'm at work so I'll try this from memory. Press the 'General' button (button is on the right-side-bank), this brings up the General page on your screen and on the right hand side of that screen is a selection called 'Reset All'. Can't remember what 'F' button it is (F4 or F5). It will ask to confirm if you want to Reset All, hit Yes. I'm told that is the equivilant of spinning the rotary wheel while turning the keyboard on (which also resets the board to factory specs). Of course if that doesn't work, go with the OS reload...Ya got the latest one (4-26-00)?

And just to be sure I'm understanding you correctly, you can go lower an octave but you can't even go back up one from there? (just wondering if you were hitting any kind of limits)

Good Luck!

mike