I was experiencing the same problem, found this thread through google while searching for a fix. I figured out the prob, and I just wanted to add the solution here in case anyone else stumbles across it.
fep.js Before:
$(document).ready(function(){
if($ == undefined){
$ = jQuery;
}
$('#pass1').simplePassMeter({
'showOnValue': true,
'Container': '#pass-strength-result'
});
$('#pass-strength-result').hide();
});
fep.js After:
jQuery(document).ready(function(){
jQuery('#pass1').simplePassMeter({
'showOnValue': true,
'Container': '#pass-strength-result'
});
jQuery('#pass-strength-result').hide();
});