Look for the following section in web.config - about 2/3 of the way from the beginning:

<dotnetnuke>
    <htmlEditor defaultProvider="TelerikEditorProvider">
      <providers>
        <clear />
        <add name="FckHtmlEditorProvider" type="DotNetNuke.HtmlEditor.FckHtmlEditorProvider.FckHtmlEditorProvider, DotNetNuke.FckHtmlEditorProvider" providerPath="~/Providers/HtmlEditorProviders/Fck/" CustomConfigurationPath="~/Providers/HtmlEditorProviders/Fck/custom/FCKConfig.js" EnhancedSecurityDefault="false" SecureConfigurationPath="~/Providers/HtmlEditorProviders/Fck/custom/FCKConfigSecure.js" ImageGalleryPath="~/Providers/HtmlEditorProviders/Fck/fckimagegallery.aspx" ImageUploadPath="~/Providers/HtmlEditorProviders/Fck/fckimagegallery.aspx" ImageAllowedFileTypes="gif,png,bmp,jpg" FlashGalleryPath="~/Providers/HtmlEditorProviders/Fck/fckimagegallery.aspx" FlashUploadPath="~/Providers/HtmlEditorProviders/Fck/fckimagegallery.aspx" FlashAllowedFileTypes="fla,swf" LinksGalleryPath="~/Providers/HtmlEditorProviders/Fck/fcklinkgallery.aspx" DynamicStylesGeneratorPath="~/Providers/HtmlEditorProviders/Fck/FCKStyles.aspx" DynamicStylesCaseSensitive="true" DynamicStylesGeneratorFilter="controlpanel|filemanager|mainmenu|wizard" StaticStylesFile="~/Providers/HtmlEditorProviders/Fck/FCKeditor/fckstyles.xml" StylesDefaultMode="Static" DynamicCSSGeneratorPath="~/Providers/HtmlEditorProviders/Fck/FCKCSS.aspx" StaticCSSFile="~/Providers/HtmlEditorProviders/Fck/FCKeditor/editor/css/fck_editorarea.css" CSSDefaultMode="static" spellCheck="ieSpell" AvailableToolbarSkins="Office2003,Silver" DefaultToolbarSkin="Office2003" AvailableToolBarSets="DNNDefault,Default,NoGallery,Basic" DefaultToolbarSet="DNNDefault" DefaultImageGallerySkin="Default" DefaultFlashGallerySkin="Default" DefaultLinksGallerySkin="Default" FCKDebugMode="false" UseFCKSource="false" OptionsOpenMode="ShowModalDialog" CustomOptionsDialog="Admin" />
        <!--Upgraded by DotNetNuke.TelerikEditorProvider version 5.4.2 - Date: 5/26/2010 7:21:24 PM-->
        <!--<add name="TelerikEditorProvider" type="DotNetNuke.HtmlEditor.TelerikEditorProvider.EditorProvider, DotNetNuke.HtmlEditor.TelerikEditorProvider" providerPath="~/Providers/HtmlEditorProviders/Telerik/" toolsFile="~/Providers/HtmlEditorProviders/Telerik/Config/ToolsDefault.xml" configFile="~/Providers/HtmlEditorProviders/Telerik/Config/ConfigDefault.xml" FilterHostExtensions="True" />-->
        <add name="TelerikEditorProvider" type="DotNetNuke.HtmlEditor.TelerikEditorProvider.EditorProvider, DotNetNuke.HtmlEditor.TelerikEditorProvider" providerPath="~/Providers/HtmlEditorProviders/Telerik/" toolsFile="~/Providers/HtmlEditorProviders/Telerik/Config/ToolsDefault.xml" configFile="~/Providers/HtmlEditorProviders/Telerik/Config/ConfigDefault.xml" FilterHostExtensions="True" />
      </providers>
    </htmlEditor>

Change defaultProvider="TelerikEditorProvider" to defaultProvider="FckHtmlEditorProvider" and re-save the modified web.config.

---

Bill, WESNet Designs
Team Lead - DotNetNuke Gallery Module Project (Not Actively Being Developed)
Extensions Forge Projects . . .
Current: UserExport, ContentDeJour, ePrayer, DNN NewsTicker, By Invitation
Coming Soon: FRBO-For Rent By Owner

i have the same problem. but are getting this error: "Could not load RadEditor. Could not load RadEditor! Error while loading provider attributes: Object reference not set to an instance of an object." i have also tried installing "TelerikEditorProvider_05.04.02_Install.zip" and a later version alos, same failure. I have also tried to reinstalle FckHtml Editor, no luck. I also tryed to change permssions to admin and host, but no luck there either. :( But the most wierd thing is, that it was working yesterday What to do? It is just grayed out.