The Nocturn will carry out an automatic calibration for the touch sensitive encoders and corssfader when it is plugged in, therefore it is best not to touch them when plugging the Nocutrn to a computer.
Unplugging the Nocturn and plugging it back in without touching the encoders and crossfader should solve the problem.
Unplugging the Nocturn and plugging it back in without touching the encoders and crossfader should solve the problem.