RadScriptManager can't load at first

[Anatoliy]

I turned my Login page to Telerik Components. There some problems!
At first, when I saved the password by browser, RadTextBox.Text was empty. That's why I turned back to asp TextBoxes.

Than I found that published website at first load at IIS server throw the Console Errors.
At second time all was complete.

 I try to fix and understand the problem, but I can't. Please, help as fast as possible!


Here is my used telerik components and their properties:

<form id="Login" method="post" runat="server">
<telerik:RadScriptManager ID="ScriptManagerLogin" runat="server" LoadScriptsBeforeUI="False">
<Scripts>
<asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.Core.js"/>
<asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQuery.js"/>
<asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQueryInclude.js"/>
<asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.Core.js"/>
<asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQuery.js"/>
<asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQueryInclude.js"/>
</Scripts>
</telerik:RadScriptManager>
//First Window
<telerik:RadWindow runat="server" Modal="True" VisibleOnPageLoad="true" Height="260px" Width="284px" Behaviors="Move" VisibleStatusbar="False" ID="RadWindowLogin" Title=" Account Information" EnableShadow="false" Behavior="None">
<ContentTemplate>
<div align="center">
<table  width="258px">
<tr>
<td style="width:70px;">
<asp:Label ID="labelDomainInfo" runat="server" Text="Domain:" ForeColor="Gray" />
</td>
<td style="text-align: center;">
<asp:TextBox ID="TextBoxDomain" runat="server" Width="180px" />
</td>
</tr>
<tr>
<td style="width:70px;">
<asp:Label ID="labelUserInfo" runat="server" Text="Username:" ForeColor="Gray" />
</td>
<td style="text-align: center;">
<asp:TextBox ID="TextBoxUsername" runat="server" Width="180px" />
</td>
</tr>
<tr>
<td style="width:70px;">
<asp:Label ID="labelPasswordInfo" runat="server" Text="Password:" ForeColor="Gray" />
</td>
<td style="text-align: center;">
<asp:TextBox ID="TextBoxPassword" runat="server" Width="180px" TextMode="Password" />
</td>
</tr>
</table>
<table width="258px">
<tr>
<td style="width:40%;">
<asp:CheckBox ID="CheckBoxPersist" runat="server" Text=" Persist Cookie " TextAlign="Left" Font-Size="Small" ForeColor="Gray" />
</td>
<telerik:RadButton ID="ButtonLogin" runat="server" Text="Login" OnClick="ButtonLoginClick" Width="60px">
</telerik:RadButton>
</td>
</tr>
</table>
<asp:Label ID="LabelError" runat="server" ForeColor="#FF3300" ClientIDMode="Static" />
</div>
</ContentTemplate>
</telerik:RadWindow>

//second window: if no root group select
<telerik:RadWindow ID="RadWindowSelectRoot" runat="server" Modal="True" VisibleOnPageLoad="false" AutoSizeBehaviors="Default" Behaviors="Move" VisibleStatusbar="False" Title=" Select Admin Group, Please" Height="500px" Width="500px">
<ContentTemplate>
<div align="center">
<table>
<tr>
<td rowspan="2">
<telerik:RadListBox ID="RadListADGroups" runat="server" DataKeyField="Id" DataSourceID="ObjectDataSourceADGroup"
                                    DataTextField="Name" EmptyMessage="Active Directory is missing" ClientIDMode="Static"
                                    Height="420px" PersistClientChanges="False" TransferMode="Copy" Width="400px" />
</td>
<td style="height: 80px;">
<telerik:RadButton ID="RadButtonAddRoot" runat="server" Text="Enter" Height="60px" Width="60px" OnClick="RadButtonAddRootClick">
</telerik:RadButton>
</td>
</tr>
<tr>
<td style="width: 100px;">
<asp:Label ID="LabelMessage" runat="server" ForeColor="#FF3300" ClientIDMode="Static" />
</td>
</tr>
</table>
</div>
<asp:ObjectDataSource ID="ObjectDataSourceADGroup" runat="server" SelectMethod="SelectADGroups" TypeName="Scheduler.WebClient.ADGroup" />
</ContentTemplate>
</telerik:RadWindow>
</form>

[Vasil]

Hello Anatoliy,

See these troubleshooting articles:
http://www.telerik.com/help/aspnet-ajax/introduction-troubleshooting.html
http://www.telerik.com/help/aspnet-ajax/introduction-web-resources-troubleshooting.html

I hope it helps.

Regards,
Vasil
the Telerik team