Trouble with a tutorial

Hello.

RE: TUTORIAL “Preloader and Transition for Dynamic Files”

I’m having trouble implementing this tutorial in my project. I think it might be because of the scrolling feature in my movie. I’m fairly new to AS, and I think a few changes in the code of the original tutorial might solve the problem. Please refer to the attached FLA. You will find the tutorial in the tutorial section of this website.
If you know of a better way to implement the scrolling feature in this tutorial, please let me know.

Thank you in advance.

PS If you are having trouble opening the attached FLA, please let me know and I will e-mail it to you.