there is obviously a problem with your clutch/flywheel,did have one with faulty input shaft where the release bearing sits,a bit of debris was preventing bearing from disengaging resulting in no drive,but I don`t know on yours if the new flywheel needs a modified clutch to suit,there is no easy solution but to take out g/box again and double check distances/measurements against your old flywheel.
cdc, March 2013