Commented Unassigned: pictures inconsistent when pasted into htmlextender [27796]

When I use the htmlextender in a page, I often try to paste html from wikepedia or other webpages into it. So I select a portion of those webpages, and do Edit/Copy, and then I paste into the htmlextender. Other times I copy and paste from emails that I get (I use Windows Live Mail). I find that in some cases, pictures do get transferred. Other times, there is just a blank frame where the picture is supposed to be. Does anyone know why this happens?
Internet Explorer seems to block pictures completely (in the extender).
Thanks.
Comments: In your web.config file, the AjaxControlToolkit TagPrefix is defined as "ajaxToolkit":   ` <add tagPrefix="ajaxToolkit" assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" /> `  So, you should either use "ajaxToolkit:" prefix or change it to "ajaxcontrolToolkit" in this definition.   If you use global TagPrefix definition (appearing one time in a web.config file, but not in each page) you should remove local definitions from pages looking like this:   ` <%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %>  ` Btw, what do you mean by "installed version 15 of the ajaxcontrolToolkit using Nuget"? Currently, AJAX Control Toolkit v15.1 has no NuGet package.