Load text in nested swf problem

I have a problem with nested swf files. I have main.swf loading separate sections (section1.swf, section2.swf, etc.)
I placed on the main timeline of section1.swf the following:

text_area = new LoadVars();
text_area.onLoad = function(success) {
if (success) {
content.htmlText = this.content;
}
};
text_area.load(“welcome.txt”);

It works fine when I test section1.swf by itself, but when I load section1.swf into main.swf the text no longer loads.

What am I doing wrong?