Originally Posted by rsn8887
I think it is a copy protection. But there is a cracked version, it tells you in the cracker-intro how to pass the copy protection doors.
Its actually a bit more complicated. You are not supposed to be able to access a lot of the rooms early on, you have to discover the codes yourself. Some of the the existing cracks and certainly the original WHDLoad slave had a fault which let you enter lots of rooms you shouldn't have had access to. But it would not allow you to summon lifts. Bert has now fixed this, AND WHAT'S MORE.... he's patched the game so that it is all moved into fast memory, making it much more playable, smooth and generally cool.
Try the new patch. :-)