'Telerik' is undefined

[Steven]

I have read through this help thread and all links within it:  http://www.telerik.com/community/forums/aspnet-ajax/scheduler/104775-telerik-is-undefined.aspx

I have a page where I am getting 'Telerik' is undefined, this only happens when the page isn't cached though, so I am deleteing my cache to replicate the problem in order to try and fix it.  We are using version 2008.3.1125.35 controls. This is happening in both my local dev environment and our web server so I am pretty sure it isn't OS related, however I am on XP 32bit running VS2008.

Once the page has cached I don't get any problem at all and everything worksperfectly.  If I clear the cache I get the error and the update panel I have on the page fails to update correctly. 

<asp:UpdatePanel ID="UpdatePanel1" runat="server">
                        <contentTemplate>
                            <asp:Button ID="btnAddToList" runat="server" Text="Add to list"
                                Visible="False" />
                            <asp:Button ID="btnClearList" runat="server" Text="Clear List"
                                Visible="False" />
                            <table width="100%">
                                <tr>
                                    <td valign="top" width="25%">
                                        <asp:RadioButtonList ID="rbnPickDetails" runat="server" AutoPostBack="True">
                                        </asp:RadioButtonList>
                                        <asp:Label ID="lblSelectFromRadio" runat="server" Text="Select the contact you wish to merge all other contacts with and then click on 'Merge Contacts' button to proceed. " visible="false"></asp:Label>
                                    </td>
                                    <td valign="top" width="75%">
                                        <asp:Label ID="lblContactDetails" runat="server"></asp:Label>
                                        <br />
                                        <asp:Button ID="btnViewContactDetails" runat="server"
                                            Text="View Contact Details" Visible="False" />
                                        <asp:Button ID="btnMergeContacts" runat="server" Text="Merge Contacts"
                                            Visible="False" />
                                        <br />
                                        <asp:Label ID="lblWarning" runat="server" ForeColor="Red"
                                            Text="You must select more than one contact to be able to merge."
                                            Visible="False"></asp:Label>
                                    </td>
                                </tr>
                            </table>
                         </contentTemplate>
                        <triggers>
                        <asp:AsyncPostBackTrigger ControlID="rbnPickDetails" EventName="SelectedIndexChanged" />
                        </triggers>
                    </asp:UpdatePanel>

Protected Sub btnAddToList_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnAddToList.Click
        For Each row As GridDataItem In uwgDuplicates.MasterTableView.Items
            If row.Selected Then
                If rbnContactType.SelectedValue = "investigators" Then
                    If IsNothing(rbnPickDetails.Items.FindByValue(row.Item("PersonnelID").Text)) Then
                        rbnPickDetails.Items.Add(New ListItem(row.Item("ContactName").Text, row.Item("PersonnelID").Text))
                    End If
                ElseIf rbnContactType.SelectedValue = "funders" Then
                    If IsNothing(rbnPickDetails.Items.FindByValue(row.Item("ContactID").Text)) Then
                        rbnPickDetails.Items.Add(New ListItem(row.Item("ContactName").Text, row.Item("ContactID").Text))
                    End If
                End If
            End If
        Next
        If rbnPickDetails.Items.Count > 1 Then
            lblWarning.Visible = False
        Else
            lblWarning.Visible = True
        End If
        lblSelectFromRadio.Visible = True
    End Sub

I have trawled through my web config but everything seems to be in order:

<httpHandlers>
        <remove verb="*" path="*.asmx"/>
        <add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
        <add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
        <add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false"/>
    <add path="Telerik.Web.UI.WebResource.axd" verb="*" type="Telerik.Web.UI.WebResource, Telerik.Web.UI" validate="false" />
      </httpHandlers>

We aren't using IIS7 but I do have the <Handlers> section also set up.

I am at a loss now, is there anything else that could cause this?

Steve

[Veselin Vasilev]

Hi Steven,

Do you have any Telerik control on the page? I cannot see it in the code you supplied.

Also, I suggest that you check the troubleshooting steps in this help topic.

Kind regards,
Veselin Vasilev
the Telerik team

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