Loading into targets

I have a maine .swf movie with buttons and two empty movie clips. When I press a button , two .swfs are loaded into emty clips , each with preloaders. Can this cause problems when im not loading into different levels with the same action scripts on the preloaders?

When I test my .fla in flash MX everything works , except the preloaders. Even with streaming mode. But on my webserver nothing seemes to work. No preloaders and no movies are loaded.

HELP ME! :frowning: