http://www.channelmyorders.com.
The default page is default.aspx
It has a log on button which fires an asp:panel with various login controls
The button does nothing.
However ...
if you go to http://www.channelmyorders.com/default.aspx it works fine !!
Has anyone come across this before.
regards
Andy
4 Answers, 1 is accepted

The following changes in web.config did the trick
<system.webServer>
<validation validateIntegratedModeConfiguration="false" />
<modules>
<remove name="ScriptModule"/>
<add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule" />
<add name="RadCompression" type="Telerik.Web.UI.RadCompression" preCondition="managedHandler" />
</modules>
<handlers>
<add name="ChartImage.axd_*" path="ChartImage.axd" verb="*" type="Telerik.Web.UI.ChartHttpHandler, Telerik.Web.UI, Culture=neutral, PublicKeyToken=121fae78165ba3d4" preCondition="integratedMode"/>
<add name="Telerik.Web.UI.SpellCheckHandler.axd_*" path="Telerik.Web.UI.SpellCheckHandler.axd" verb="*" type="Telerik.Web.UI.SpellCheckHandler, Telerik.Web.UI, Culture=neutral, PublicKeyToken=121fae78165ba3d4" preCondition="integratedMode"/>
<add name="Telerik.Web.UI.DialogHandler.aspx_*" path="Telerik.Web.UI.DialogHandler.aspx" verb="*" type="Telerik.Web.UI.DialogHandler, Telerik.Web.UI, Culture=neutral, PublicKeyToken=121fae78165ba3d4" preCondition="integratedMode"/>
<add name="Telerik.RadUploadProgressHandler.ashx_*" path="Telerik.RadUploadProgressHandler.ashx" verb="*" type="Telerik.Web.UI.Upload.RadUploadProgressHandler, Telerik.Web.UI" preCondition="integratedMode"/>
<add name="Telerik.Web.UI.WebResource.axd_*" path="Telerik.Web.UI.WebResource.axd" verb="*" type="Telerik.Web.UI.WebResource, Telerik.Web.UI" preCondition="integratedMode"/>
</handlers>
</system.webServer>

Do you have RadCompression enabled on the page? If so, could you please try to disable it and see if the problem still occurs?
There is a known issue with RadCompression under IIS7 caused by a breaking change in the way how IIS renders the form element. Mode detailed information is available in the following articles:
http://www.telerik.com/help/aspnet-ajax/compression.html
http://www.asp.net/whitepapers/aspnet4/breaking-changes#0.1__Toc256770154
Regards,
Dobromir
the Telerik team
