help working out why my swf files don't load into my main site properly?

I'm making a website just in flash and I'm making it so the pages load into one main page. As in I have a Loader (called myLoader) and I' loading other swf files I have made into that loader using the scripting

Code:

---

on (release) {
myLoader.contentPath="(swf file name).swf";
}

---

this works for my about and news buttons which are just text, but when I use it for my audio and gallery pages they don't load when I test my movie. The files work when I test just the swf file etc but they don't load in at all.

Can anyone help me figure out why this happens and/or what the correct scripting is?

This is probably easy, but I'm a noob at flash.