Okay, the v4x series of my patches all seem to have buggy button state tracking in various scenarios, so I've rewritten my button state tracker to clean up the logic and eliminate (all?) the quirks.

-- replaced ugly button tracker with less ugly code
-- fixed the & and ' characters in the font (they were reversed)
-- prevent overflow on input in the calculator
-- new Reboot option (with confirmation), for Tony
-- press and continue to hold knob to cycle through input-sources at 1sec intervals

This version (v45) looks good so far for me, much better than its recent predecessors.
Give it whirl, and let me know if you find any undocumented features.

http://rtr.ca/empeg/

Cheers!