Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; GTB6.3; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; InfoPath.3)
Timestamp: Sat, 30 Jan 2010 23:40:31 UTC

Message: 'undefined' is null or not an object
Line: 160
Char: 5
Code: 0
URI: http://www.site.com/sites/all/modules/tabs/ui.tabs.js?s

Files: 
CommentFileSizeAuthor
#2 error_tabs_ie.jpg100.42 KBdanny1997

Comments

I can't reproduce this, could you give more steps please?

StatusFileSize
new100.42 KB

I've got the same error message too in IE 8.

While I install only a few modules in a new site, there is no problem for tabs.

But when I begin to develop the site in adding other modules, one day the tabs suddenly disappear from the teaser and I see the error message in the IE.

The tabs work well in full node.