JQuery 1.4.2 Problem with JQueryUI Tabs in IE 8

JQuery 1.4.2 Problem with JQueryUI Tabs in IE 8

Hi,

I have recently added tabs to my webpage and when i click a button in the tab i get the following error in IE 8:

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; .NET CLR 1.1.4322; OfficeLiveConnector.1.4; OfficeLivePatch.1.3)
Timestamp: Tue, 8 Jun 2010 10:47:23 UTC


Message: 'undefined' is null or not an object
Line: 55
Char: 143
Code: 0
URI: jquery-1.4.2.min.js

I am using JQuery 1.4.2 and JQueryUI 1.8.1

I tried upgrading the UI to 1.8.2 but the problem still happened. I downgraded JQuery to 1.4.1 and the problem went away.

I tried it in firefox and no errors, not even a warning in firebug.

Scott.