Based on http://sp2010batchedit.codeplex.com/discussions/278629 :
 
I select a few files and hit Batch Edit, but all I see at the bottom of IE is Error on Page?
 
Webpage error details
 
User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.3; .NET4.0C; .NET4.0E; MS-RTC LM 8)
Timestamp: Mon, 7 Nov 2011 20:29:06 UTC
 
 
Message: 'Type' is undefined
Line: 1
Char: 1
Code: 0
URI: http://servername/_layouts/TamTam.SP2010.BatchEdit/TamTam.SP2010.BatchEdit.js
 
 
Message: 'TamTam' is undefined
Line: 2
Char: 19886
Code: 0
URI: http://servername/_layouts/sp.ribbon.js?rev=F%2BUEJ66rbXzSvpf7nN69wQ%3D%3D
 
 
Message: 'TamTam' is undefined
Line: 2
Char: 19886
Code: 0
URI: http://servername/_layouts/sp.ribbon.js?rev=F%2BUEJ66rbXzSvpf7nN69wQ%3D%3D
 
 
Message: 'TamTam' is undefined
Line: 2
Char: 19886
Code: 0
URI: http://servername/_layouts/sp.ribbon.js?rev=F%2BUEJ66rbXzSvpf7nN69wQ%3D%3D