I have a problem displaying appointments in the first row. They add to the database but disapear on the UI. 

Here is the code for my rad Scheduler

      <telerik:RadScheduler ID="AttendanceScheduler" runat="server" Skin="Office2007"
                    Width="100%" Height="100%"
                    StartEditingInAdvancedForm="true" SelectedView="TimelineView" 
                    DisplayDeleteConfirmation="true" DayStartTime="08:00:00" DayEndTime="18:00:00"
                    TimeZoneOffset="0:00:00" HoursPanelTimeFormat="h:mm tt" NumberOfHoveredRows="1"
                    ShowHeader="false" ShowAllDayRow="false" ShowFullTime="false" ShowNavigationPane="false"
                    GroupBy="DayOfWeek" EnableResourceEditing="true" CustomAttributeNames=""
                    EnableCustomAttributeEditing="false" VisibleAppointmentsPerDay="1"
                    OnClientRequestSuccess="requestSuccess"
                    OnClientRequestFailed="requestFailed" OnClientAppointmentsPopulating="AttendancePopulating"
                    OnClientAppointmentsPopulated="AttendancePopulated"
                    OnClientTimeSlotClick="OnClientTimeSlotClick" OnClientAppointmentDoubleClick="OnClientAppointmentDoubleClick"
                    OnClientAppointmentInserting="AttendanceInserting" OnClientAppointmentCreated="AttendanceCreated"
                    OnClientAppointmentEditing="AttendanceEditing"
                    OnClientAppointmentMoveEnd="OnAttendanceMoveEnd"
                    OnClientAppointmentResizeEnd="OnAttendanceResizeEnd">
                    <MonthView UserSelectable="false" />
                    <TimelineView ColumnHeaderDateFormat="hh:mm tt" HeaderDateFormat="hh:mm tt" NumberOfSlots="48"
                        SlotDuration="00:15:00"  GroupBy="DayOfWeek" TimeLabelSpan="1" StartTime="08:00" GroupingDirection="Vertical"
                        UserSelectable="false" />
                    <DayView UserSelectable="false" />
                    <WeekView UserSelectable="false" />
                    <WebServiceSettings Path="ClientAttendanceTemplateService.svc" ResourcePopulationMode="Manual"
                        GetResourcesMethod="GetClientAttendanceResources" GetAppointmentsMethod="GetClientAttendances"
                        InsertAppointmentMethod="InsertClientAttendance" UpdateAppointmentMethod="UpdateClientAttendance"
                        DeleteAppointmentMethod="DeleteClientAttendance" CreateRecurrenceExceptionMethod="CreateClientAttendanceRecurrenceException"
                        RemoveRecurrenceExceptionsMethod="RemoveClientAttendanceRecurrenceExceptions" />
                    <Localization ConfirmDeleteText="Are you sure you want to delete this Attendance?"
                        ConfirmDeleteTitle="Confirm Attendance Delete" />
                </telerik:RadScheduler>

I am adding the resources in the backend using code below

  private IEnumerable<Resource> GetResources()
        {
            List<Resource> resources = new List<Resource>();
            for (int i = 0; i < 7; i++)
            {

                string dayOfWeek = GetDayOfWeek(i);
                Resource res = new Resource("DayOfWeek", i, dayOfWeek);
                resources.Add(res);
            }

            return resources;
        }

        private string GetDayOfWeek(int dow)
        {
            string dayOfWeek = "";
            switch (dow)
            {
                case 1:
                    dayOfWeek = "Monday";
                    break;
                case 2:
                    dayOfWeek = "Tuesday";
                    break;
                case 3:
                    dayOfWeek = "Wednesday";
                    break;
                case 4:
                    dayOfWeek = "Thursday";
                    break;
                case 5:
                    dayOfWeek = "Friday";
                    break;
                case 6:
                    dayOfWeek = "Saturday";
                    break;
                case 0:
                    dayOfWeek = "Sunday";
                    break;

            }
            return dayOfWeek;
        }

Only the first row of the scheduler doesn't show the added appointment!