Hi, I am cross posting this from the Telerik forum as per thier suggestion.   We have been trying to resolve or at least understand a version problem for over a week and have been unsuccessful. 

In short I have purchased and install V3 of the controls yet DNN keeps trying to load V2.  I have a  work around but would really like understand why this is happening and if I should not have installed the new version of the controls.  Its my intent to use other products, like reporting, from Telerik and need to have them installed.  Any guidance would be appreciated.

The full discussion is here.

http://www.telerik.com/community/forums/aspnet-ajax/general-discussions/version-problem.aspx#1484917

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I am having one heck of a time with versions of Telerik.Web.UI.  I Telerik Ajax controls v2010.3.  My page complains that it can not locate version 2010.2.929.35  yet 2010.03.1215.35 is installed.  I've had to add a bindingredirect to my web.config.

  <runtime>

    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">

      <dependentAssembly>

        <assemblyIdentity name="TeHi Ed,

Perhaps you should post your question on the DNN forums as well. The RadControls assembly (Telerik.Web.UI) is used extensively in the DNN code and each DotNetNuke version ships with a specific version of our controls. I don't think that upgrading only the Telerik controls is possible without also upgrading the DNN version as well. Since the current DNN version (5.6.0) references the 2010.2.929.35 build of Telerik.Web.UI, you should not try to upgrade the controls to a new build (e.g. Q3 2010). Instead, you should wait for DNN Corp to release an new version, which will feature the updated controls as well.

While upgrading just Telerik.Web.UI is theoretically possible, you might break some vital part of the DNN site - e.g. the admin panel or the page navigation due to some change from the Q2 to Q3 releases of RadControl. This is why I strongly suggest that you go to the DNN forums. I am sorry that we were not able to help you with your problem.

All the best,
Lini
the Telerik teamlerik.Web.UI" publicKeyToken="121fae78165ba3d4" />

        <bindingRedirect oldVersion="2010.2.929.35" newVersion="2010.03.1215.35" xmlns="urn:schemas-microsoft-com:asm.v1" />

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Brian, that's a big help and I understand it now.  Thanks.   Would I be correct in saying that the V2 request is embedded  somewhere in the DNN binaries?

Got it.  Thanks for a such a good explanation.