5000: The class 'CustomLoader' must subclass 'flash.display.MovieClip'

5000: The class ‘CustomLoader’ must subclass ‘flash.display.MovieClip’ since it is linked to a library symbol of that type.

This is the error I get when I try to run my flash project.

I followed this tutorial
http://broskies.net/temp/tut.html

but I use Flash CS4 instead of FlashDeveloper.

I googled about this problem, but havn’t find a working solution… perhaps am I doing something wrong?

What I´ve done in an attempt to fix the error is that I:

  1. Added
import flash.display.MovieClip;

to CustomLoader.as

  1. Added a Base class to intro3D.fla. The settings can be seen in this image:
    http://broskies.net/temp/Image1.png

Help is very appreciated!