I have a radmenu that that runs horizontally at the top of a web page with a handful of menu items. The default behavior is that the radmenu spans 100% of the page and the menu items appear to render very nicely (as expected).
When i add a default radgrid to the page everything continues to look fine.
When i add either of the following 2 properties to the RadGrid (see below) the radmenu now becomes really small. The menu no longer spans 100% of the pages and when expanded the menu items all render very small for some reason.
AllowFilteringByColumn="true"
EnableHeaderContextMenu="true"
I'm using the glow skin for the radmenu, but i have tried several skins and they all act the same.

<telerik:RadEditor ID="relet" runat="server" ToolsFile="~/Content/Telerik/mailmergetoolsfile.xml" Content='<%# Bind("templatecode")%>' OnLoad="RadEdBase_Load" OnTextChanged="rewithimage_TextChanged" EditModes="Html,Design" OnClientPasteHtml="OnClientPasteHtml" Width="100%" ImageManager-MaxUploadFileSize="5000000" />
I have set up the radeditor as follows on my page. However, when loading the editor, the Content textbox has a height of zero. Pressing a button on the editor or refreshing the page fixes this behaviour. Is this a common or reported issue with an available solution? I have no custom CSS altering the height of the editor.

Is it possible to use the Track Changes and Comments features with Telerik Web Parts for SharePoint? If yes, ​what files do I modify to add the code to enable these features? I was looking at this help file, but don't have the context to know what files I need to edit to enable the functionality.
http://docs.telerik.com/devtools/aspnet-ajax/controls/editor/functionality/track-changes-and-comments/track-changes#enabling-track-changes-feature-and-tools
I'm new to your product, as we are currently evaluating it to confirm that it has the functionality we want for our SharePoint deployment. Any help you can give me is greatly appreciated!
Thank you!

Hi
I have been unable to resolve this problem, even using asp:panels as suggested.
I have a RadSplitter (v2015.3), alignment is horizontal.
2 panes reside within it.
One at the Top for a RadMenu.
One beneath as a contentPane.
Menu items when clicked, do not show the LoadingPanel.
Thx
Neal
My Markup is :
<body style="border:none; background-color:Black"> <form id="form1" runat="server"> <telerik:RadScriptManager ID="Scriptmanager1" runat="server" AsyncPostBackTimeout="36000" EnableTheming="True"> </telerik:RadScriptManager> <telerik:RadCodeBlock ID="xx" runat="server"> <script language="javascript" type="text/javascript"> window.onresize = window.onload = pageLoad; function pageLoad() { var menu = $find("<%= RadMenu1.ClientID %>"); var width = menu.get_element().offsetWidth; var singleItemLength = Math.floor(width / menu.get_items().get_count()) - 2 + "px"; for (var i = 0; i < menu.get_items().get_count() ; i++) { var li = menu.get_items().getItem(i).get_element(); li.style.width = singleItemLength; } } function OpenLogin() { var urlExtn = "ms=" + new Date().getTime(); var oWnd = radopen("LoginPg.aspx?" + urlExtn, "Login"); oWnd.setSize(500, 233); oWnd.Center; } function MenuItemItemClicked(sender, args) { var itemValue = args.get_item().get_value(); if (itemValue == "11") { ShowRadWinRegister(); } if (itemValue == "12") { OpenLogin(); } } function ShowRadWinRegister() { var urlExtn = "ms=" + new Date().getTime(); var oWnd = radopen("Forms/ClientForms/Registration.aspx?" + urlExtn , "Register" ); oWnd.moveTo( 20, 40 ); } function RefreshParentPage() { $find("<%= RadAjaxManager1.ClientID %>").ajaxRequest("Rebind"); } function OnClientShow(sender, eventArgs) { RadWindow.Center; } function ShowLoading() { $find("<%= RadAjaxManager1.ClientID %>").ajaxRequest("InitialPageLoad"); } </script> </telerik:RadCodeBlock> <telerik:RadWindowManager ID= "RadWindowManager1" runat= "server" Overlay="true" Modal="true" > <Windows> <telerik:RadWindow runat="server" ID="Login" Width="500px" Height="233px" Behaviors="None" VisibleStatusbar="False" VisibleTitlebar="False" OnClientClose="RefreshParentPage" > </telerik:RadWindow> <telerik:RadWindow ID="Register" runat="server" Width="1020px" Height="535px" Top="40px" Left="20px" VisibleStatusbar="False" style="display:none;" Behaviors="Default" InitialBehaviors="None" OnClientShow="OnClientShow" > </telerik:RadWindow> </Windows> </telerik:RadWindowManager> <div id="oBox" class="oBox" > <!-- Div Top Center Text 50px height--> <div id="DivTopText" align="center" class="DivTopText" > <div class="DivTopText" style="text-align:right"> <asp:Label ID="lblLoggedUser" runat="server" Text="" Visible="true" width="360px" ForeColor="Black" Font-Size="Small"></asp:Label> </div> </div> </div> <div id="MenuDiv" align="center" class="MenuDiv" style="position:absolute;top:47px;border:none 0 transparent; width:100%"> <telerik:radsplitter id="RadSplitter1" runat="server" Height ="930px" width="100%" liveresize="true" orientation="Horizontal" ResizeWithParentPane="true" ResizeMode="proportional" BorderStyle="None" style="position:absolute;top:0px; left:0px; border:none 0 transparent " > <telerik:radpane id="NavPane" runat="server" Height="30px" scrolling="None" BackColor="Black" style="position:absolute;top:0px;border:none 0 transparent; left: 0px; width: 100%;" > <asp:Panel ID ="aspMenuPanel" runat="server"> <telerik:RadMenu ID="RadMenu1" style="position:absolute;top:0px;border:none 0 transparent " Height="32px" runat="server" Width="100%" skin="Black" OnClientItemClicked="MenuItemItemClicked" DataFieldID="ScreenId" DataFieldParentID="ParentScreenId" DataNavigateUrlField="Screen" DataTextField="Title" DataValueField="ScreenId" OnItemDataBound="RadMenu1_OnItemDataBound" BorderStyle="None" CausesValidation="False" > </telerik:RadMenu> </asp:Panel> </telerik:radpane> <telerik:radpane id="RadPane2" runat="server" height="100%" BorderStyle="none" width="100%" scrolling="None" style="position:absolute; top:62px; left:0px" > <asp:Panel ID="aspOuterContentPanel" runat="server" ></asp:Panel> <telerik:radsplitter id="RadSplitter2" runat="server" orientation="Horizontal" BorderStyle="none" BorderWidth="0px" EnableEmbeddedSkins="false" Height="100%" width="100%"> <telerik:radpane id="ContentPane" BackColor="Black" runat="server" style="position:absolute; top:65px; left:0px; " Width="100%" Height="100%" BorderStyle="none" ContentUrl="LandingPage.aspx" Scrolling="None"> <asp:Panel ID="aspContentPanel2" runat="server" ></asp:Panel> </telerik:radpane> </telerik:radsplitter> </telerik:radpane> </telerik:radsplitter> <telerik:RadAjaxManager ID="RadAjaxManager1" OnAjaxRequest="RadAjaxManager1_AjaxRequest" runat="server" DefaultLoadingPanelID="RadAjaxLoadingPanel1" > <ajaxsettings> <telerik:AjaxSetting AjaxControlID="RadMenu1" > <UpdatedControls> <telerik:AjaxUpdatedControl ControlID="xx" /> <telerik:AjaxUpdatedControl ControlID="RadWindowManager1" /> <telerik:AjaxUpdatedControl ControlID="aspOuterContentPanel" /> <telerik:AjaxUpdatedControl ControlID="RadSplitter1" /> <telerik:AjaxUpdatedControl ControlID="RadSplitter2" /> <telerik:AjaxUpdatedControl ControlID="RadMenu1" /> <telerik:AjaxUpdatedControl ControlID="RadAjaxManager1" /> <telerik:AjaxUpdatedControl ControlID="aspContentPanel2" /> </UpdatedControls> </telerik:AjaxSetting> <telerik:AjaxSetting AjaxControlID="RadAjaxManager1" > <UpdatedControls> <telerik:AjaxUpdatedControl ControlID="xx" /> <telerik:AjaxUpdatedControl ControlID="RadWindowManager1" /> <telerik:AjaxUpdatedControl ControlID="RadMenu1" /> <telerik:AjaxUpdatedControl ControlID="RadAjaxManager1" /> <telerik:AjaxUpdatedControl ControlID="aspContentPanel2" /> </UpdatedControls> </telerik:AjaxSetting> </ajaxsettings> </telerik:RadAjaxManager> <telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server"> <asp:Image ID="Image1" ImageUrl="~/Images/loading5.gif" BorderWidth="0px" AlternateText="Loading" runat="server" Style="margin-top: 145px;z-index:999999"> </asp:Image> </telerik:RadAjaxLoadingPanel> </div> </form></body>
<telerik:AjaxLoadingPanel ID="AjaxLoadingPanel1" runat="server" Height="75px" Width="75px">
<img alt="loading..." src="../RadControls/Ajax/Skins/Default/loading6.gif" />
</telerik:AjaxLoadingPanel>
gives error:Error16 Unknown server tag 'telerik:AjaxLoadingPanel'. when we updating telerik dll 2012 to 2015


telerik.web.UI.raddatepicker does not contain a definition for PopupButton when we update dll 2012 to 2015.
raddatepicker 1.PopupButton.Attributes["onclick"] = "PopupUpdating(\"" + raddatepicker1 .ClientID + "\");";​
