Accordion - Bug in Standalone Scripts?

Accordion - Bug in Standalone Scripts?

Figured I'd post here before bothering the support stuff with a bug report.

If I create an accordion and include the following scripts, all work fine: 
  1. <script type="text/javascript" src="js/jquery-1.4.2.min.js"></script>
  2. <script type="text/javascript" src="js/jquery-ui-1.8.2.custom.min.js"></script>

However, doing the same thing, but using these scripts (yes, they are present, latest versions):
  1. <script type="text/javascript" src="development-bundle/jquery-1.4.2.js"></script>
  2. <script type="text/javascript" src="development-bundle/ui/jquery.ui.core.js"></script>
  3. <script type="text/javascript" src="development-bundle/ui/jquery.ui.accordion.js"></script>
Result in the following errors (reported by FireBug), and the accordion won't work at all:
$.widget is not a function
file:///D:/Development/_Sandbox/jQueryUI/jquery-ui-1.8.2.custom/development-bundle/ui/jquery.ui.accordion.js
Line 410
$("#accordion").accordion is not a function
file:///D:/Development/_Sandbox/jQueryUI/jquery-ui-1.8.2.custom/accordion1.html
Line 17

If not a bug, there's probably a change in what individual scripts to be use.