loadMovie gives me headache

All right,
that should be a simple one. I can run my flash file in flash player no problem but when I play it on a html page it doesn’t run. I tried many way, changing my script but I don’t understand why it doesn’t work. I’m just trying to load a swf in a movieclip I called contents

I get a message asking me if I want to cancel the script because It can freeze my computer or slowing it down…

In fact, my script is:


I know that it is this loadMovie I have many other tween before but i tried to flush them all and I still get the same. I changed for other swf i’ve done before still doesn’t work. I tried in safari and firefox.

Can you help me?