From what you say, sounds like the pressure plate wasn't lined up on it's mark with the clutch centre. The p/plate will then sit on the center and can't compress the plates. IE, no drive to rear wheel. Shows you how in the manual.
If clutch is stiff, clean the worm actuator on the left side, grease well before puting back and grease the pushrod parts at the same time, don't lose the 1/4 ball or 6x10mm spacer.