Elevator keeps stuck

I would like somebody to tell me why my elevator won't work.
I started editing only 3 days ago, and building a mover is no problem. I build an elevator, but when I play my level, it stucks only half way his destination, it 'bounces' 2 times or so, like there's something above me, and then it finally moves on to the lift exit. Only then, I can't get off!! Cannot move at all. Could somebody tell me what I do wrong, and how I can fix this??

Thanks in advance..

JAYMZ)):

Too bad, I have rebuild my level, and there are only 2 keyframes, base and key 1. And I am allowed to mov, cuz the rest of my level works perfectly..
Any other ideas?? Thanks anyway..

BTW: How do you receive that title under your name such as Godlike, Skilled, adept, and in my case: one-timer??

Thx

Thanks a lot!! I messed something around with what you said, and some other things, and it's working!!
C u