Navigation Menu Builder will not load

Navigation Menu Builder will not load It just keeps trying to load for hours! Any ideas? Thanks

let me change that, Nothing will load! Not any of the builders under admin!

I have the same problem with Navigation Menu Builder

Dito here. I am trying to search for a resolution. I have downloaded Fire Fox but nothing. I am seriously getting cheesed off......

Help!!!!

1.  If it doesn't load within 1 minute, it's not going to load.

2.  inc/js/classes/BxDolMenu.js (check if the file is compressed if it's there) compare to an unmodified original one and see if it's a match.  You can use Notepad++ to compare them.