When asking for technical help at the very least let us know the version of firmware you are running.Cliff's Calibration (Mapping) Guide is a MUST READ: http://www.vemssupport.com/forum/index.php/topic,97.0.html
I found one log of miss shifting from 3rd to 2nd gear. No trigger errors with removed pullup resistorThat was nice car, opel 2.0 16v with 3.2bar of boost.