what setup software are you using.. BAD EEPROM CONTENTS i was told is when the settings are incorrect, Old settings file with new software.this means the settings may have changed memory location and casues a bad EEProm contents as what it expects is not a valid figure for the new software

BAD CODE COMBINATION is when upgrade of software has failed this is what Meridian UK told me.
you must make sure you have the latest version of mconfig and version 4.2 in the machine, earlier software in the machine than 4.2 you need to use legacy software. Retype the machine and then build a brand new settings file don't use the old one you fetched this is what I was old to do also.