Commented Unassigned: AjaxFileUpload error [27561]

I'm having issues with the file upload & Image upload (In the htmlEditorExtender). I'm using .Net 4.5 and the latest AjaxControlTools (7.1005 - Sept 2013.) - IIS 6

Apparently I need to a add the following to the web.config file:
<httpHandlers>
<add verb="*" path="AjaxFileUploadHandler.axd" type="AjaxControlToolkit.AjaxFileUploadHandler, AjaxControlToolkit"/>
</httpHandlers>

But when I do, the entire site breaks and I get the following error:
500 - Internal server error. There is a problem with the resource you are looking for, and it cannot be displayed.

I appreciate any help.


Comments: Oops, had the handler in the wrong part of the web.config.