I have dnn installed in a sub-folder of another site.  When I put a reference to add the assembly for System.Web.Extensions version 3.5 in either the parent site's web.config or the dnn web.config, I am experiencing some problems.  The DNN site seems to work mostly fine, but I am unable to navigate to the Admin/Site Settings or Host/Host Settings pages.  In IE the page never loads and in Firefox I get an error "Firefox has detected that the server is redirecting the request for this address in a way that will never complete."

The problematic entry is:

<add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

I noticed that the existing entry in the dnn web.config file is to version 1.0.61025.0

I don't think I am using any of the 3.5 changes in that namespace, so once I isolated it I commented it out of the parent site's web.config.

I am using some new features and changes introduced in v3.5 within the System.Core namespace, and left it in the parent site web.config.  I haven't detected any issues its use may be causing with DNN...are there any known issues with the .NET framework 3.5 assemblies?  Finding the problem with System.Web.Extensions v3.5 was a bit random since it only impacted those two pages...that I could tell.

-Pat

you can redirect all references to the 3.5.0.0 with

  <runtime>

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

      <probing privatePath="bin;bin\HttpModules;bin\Providers;bin\Modules;bin\Support;" />

                <dependentAssembly>

                <assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35"/>

                <bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>

            </dependentAssembly>

            <dependentAssembly>

                <assemblyIdentity name="System.Web.Extensions.Design" publicKeyToken="31bf3856ad364e35"/>

                <bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>

            </dependentAssembly>

    </assemblyBinding>

  </runtime>

after updating all the system.web.extensions refernces to 3.5.0.0 it broke the Telerik RadEditor

http://www.telerik.com/community/forums/dotnetnuke/module-development/system-web-ui-ambiguous-namespace-issue-with-radeditor-on-dnn.aspx

but definetely delete the system.web.extensions.dll from the DNN bin