I had twice lost the scroll mode which I use to perform. Luckily it has only happened at home. I think my big feet hitting more than one thing at a time.
The following allows you to restore the global settings without loosing all your presets.
Resetting All Global Settings:
Resetting the Global Settings returns them to factory default. Performing this reset does not affect any presets you may have created.
1. From the Global Settings menu, press ACTION.
2. Press Knob 1 (Factory Settings). The following dialog appears: Cancel, OK Factory Settings?
3. Press Knob 3 (OK)