loadClip errors only in Flash Player 10

programming flash
1

I have a swf called index.swf loading another called home.swf, which in turn loads jpgs, all using loadClip as follows:

var myMCL = new MovieClipLoader();
myMCL.loadClip(“Home.swf”,“slideLoader”);

in which Home.swf is the clip to be loaded, slideLoader is the empty movieclip instance on the stage that is being loaded into.

It works fine locally.
Online, it works fine in IE with Flash Player 9 but does not work in Firefox Flash Player 10. It simply tries to read from the server forever and never actually loads in the Home.swf.

Is there a bug in Flash Player 10? Or is it in Firefox? Or does anyone have any suggestions? Stuck!