Sitecore 6.4 - Web.config registration missing!

[Sean]

"The Telerik dialogs require a HttpHandler registration in the web.config file." 

I'm getting this error when I attempt to add a link to my content in the Sitecore Editor.  This started occuring after I upgraded my Sitecore CMS to Sitecore 6.4. 

The version of the Telerik.Web.UI.dll in my application bin folder is: "2010.2.826.35"

I am running the application in IIS 7.5 integrated managed pipeline mode. 

I have verified that the following handlers have been added to my application web.config file:

in the <system.webServer> section:

<handlers>
<add name="Telerik_Web_UI_DialogHandler.aspx" verb="*" preCondition="integratedMode" path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" />     
<add name="Telerik_Web_UI_SpellCheckHandler_axd" verb="*" preCondition="integratedMode" path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" />
<add name="Telerik_Web_UI_WebResource_axd" verb="*" preCondition="integratedMode" path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" />
</handlers>

In <system.web>
<httpHandlers>
<add verb="*" path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" />
<add verb="*" path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" />
<add verb="*" path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" />
</httpHandlers>

But - I still get the error.  Does something else need to be configured?

[Marian Pintilie]

Hi. Sean.

I'm stuck in the same problem that you have. Did you manage to fix it?
I have the same version of Sitecore installed. I have this problem when I click to spell check button and a dialog window opened.

Thank you.