As3-cs4 package.as subclasses MovieClip, fla generates error 5000 anyway

Question

Hi, I am working with a trial version of Flash CS4 on a leopard intel mac.
Starting with a clean os install, and a clean cs4 install I do the following
start Adobe Flash CS4: Trial Version
Select "I would like to continue to use this product on a trial basis" and continue...
select create new Flash File (action script 3.0)
open actions window
type the following..
trace("hello world");
save file test_report.fla
test file
output ok.
close swf window
file > new > action script file
type in the following code
package {
    public class test_report{
        public function test_report(){
            trace("Hello world");
select the test_report.fla tab
fill in the "Class:" textbox of the property window with the string "test_report"
click the pencil icon to test that pathing is ok, the UI opens test_report.as so it must be ok.
test the movie
2 errors
1180: Call to a possibley undefined method addFrameScript
5000: the class "test_report" must subclass 'flash.display.MovieClip' yada yada
so add the offending line to the as file so that it looks like this..
package {
    public class test_report{
        import flash.display.MovieClip;
        public function test_report(){
            trace("Hello world");
save and test movie, same two errors
AS IF I HAD NOT MADE THE ENTRY!
NOTHING I CAN DO WILL MAKE THE ERROR GO AWAY
obviously I am doing something wrong, please help!
I only have 15 days left on the trial and I would really like to know I can get this to work on leopard!
thanks
rob
Hardware Overview:
  Model Name:    iMac
  Model Identifier:    iMac7,1
  Processor Name:    Intel Core 2 Duo
  Processor Speed:    2.4 GHz
  Number Of Processors:    1
  Total Number Of Cores:    2
  L2 Cache:    4 MB
  Memory:    1 GB
  Bus Speed:    800 MHz
  Boot ROM Version:    IM71.007A.B03
  SMC Version:    1.20f4
  Serial Number:    W880759YX86
  System Version:    Mac OS X Server 10.5.6 (9G71)
  Kernel Version:    Darwin 9.6.0
  Boot Volume:    workSystem
  Boot Mode:    Normal
  Computer Name:    kbox
  User Name:    rob foree (robforee)
  Time since boot:    1:02

Answer 1

Hi,
First of all
import flash.display.MovieClip;
should be just after "package {" not "class... {"
and
public class test_report extends MovieClip
report further situation