The Previous < and Next > month buttons do not update the calendar when they are clicked using the following .aspx code with Telerik.Web.UI version 2010.1.415.35.
<telerik:RadSplitter runat="server" ID="RadSplitter1" PanesBorderSize="0" Width="734px" Height="782px" Skin="Office2007"> <telerik:RadPane runat="server" ID="leftPane" Width="260px" MinWidth="260" MaxWidth="300" Scrolling="None" > <telerik:RadCalendar runat="server" ID="RadCalendar1" Skin="Office2007" AutoPostBack="True" EnableMultiSelect="False" DayNameFormat="Shortest" OnSelectionChanged="RadCalendar1_SelectionChanged" CellAlign="Center" CellVAlign="Middle" FirstDayOfWeek="Default" MonthLayout="Layout_7columns_x_6rows" Orientation="RenderInRows" PresentationType="Interactive" SelectedDate="" TitleAlign="Center" ShowRowHeaders="False"> </telerik:RadCalendar> <br /> <telerik:RadPanelBar runat="server" ID="RadPanelBar1" Height="380px" ExpandMode="FullExpandedItem" OnItemClick="RadPanelBar1_ItemClick" Skin="Office2007"> <Items> <telerik:RadPanelItem Text="Appointments" Expanded="True"> <Items> <telerik:RadPanelItem Text="Appointment Master" /> <telerik:RadPanelItem Text="Criminal History Schedule (Troop)" /> <telerik:RadPanelItem Text="New Appointments" /> </Items> </telerik:RadPanelItem> <telerik:RadPanelItem Text="Services" > <Items> <telerik:RadPanelItem Text="Headquarters Service" /> <telerik:RadPanelItem Text="Service Worklist" /> </Items> </telerik:RadPanelItem> <telerik:RadPanelItem Text="Reports"> <Items> <telerik:RadPanelItem Text="CHCM Report Module" /> </Items> </telerik:RadPanelItem> </Items> </telerik:RadPanelBar> <p style="padding: 5px 10px"><asp:Literal Runat="server" ID="Label1"></asp:Literal></p> </telerik:RadPane>