It seems like no one wants to give any support for that tutorial, I have posted two separate threads in two separate sections of the forums with no response to either.
I'm not really sure how much help I can be since I am stuck on the tutorial too, but you did do the next part of the tutorial where you set the I think its called FadeDist from 80 to -1 right?
If you get past this let me know, as I am having problems with the second, third, and fourth set of doors not opening properly.