Rad Editor Dialogs

[Amoszcz]

I am using Rad Editor in MOSS2007 and I am unable to start Image manager feature of the RadEditor.
I get the message that:

Web.config registration missing! The Telerik dialogs require a HttpHandler registration in the web.config file.

Even tough i am entering all the registration entries (Manually) in C:\inetpub\wwwroot\wss\VirtualDirectories\80\web.config file it doesn't change anything and the error still shows up. I was even wondering if i was editing wrong file. Is there is anything else that might cause this error?

Error Details:

The file '/_layouts/um.fem/panel/Telerik.Web.UI.DialogHandler.aspx' does not exist.   at System.Web.UI.Util.CheckVirtualFileExists(VirtualPath virtualPath)
   at System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile)
   at System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile)
   at System.Web.Compilation.BuildManager.GetVirtualPathObjectFactory(VirtualPath virtualPath, HttpContext context, Boolean allowCrossApp, Boolean noAssert)
   at System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath(VirtualPath virtualPath, Type requiredBaseType, HttpContext context, Boolean allowCrossApp, Boolean noAssert)
   at System.Web.UI.PageHandlerFactory.GetHandlerHelper(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath)
   at System.Web.HttpApplication.MapHttpHandler(HttpContext context, String requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig)
   at System.Web.HttpApplication.MapHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously

[Amoszcz]

Problem solved. I haven't noticed that i need to change the extension of dialog handler to .axd in MOSS2007.