Could not load file or assembly

[Steve]

I'm using RadControls for ASPNET AJAX Q1 2008 in a web part in WSS 3.0.

My solutions build and deploy fine but when I try to hit the web part in WSS I get the following error msg:

"Could not load file or assembly 'Telerik.Web.UI' or one of its dependencies. The system cannot find the file specified."

I didn't know this dll had any dependencies.

Can you tell me how to fix this pls?

[Sebastian]

Hello Steve,

It seems that you have not registered correctly the Telerik.Web.UI.dll and it cannot be referenced at runtime. Can you please double-check that you followed precisely the steps from the Integrating RadControls in MOSS chapter of the online documentation:

http://www.telerik.com/help/aspnet-ajax/introduction.html

This should help you address the issue you are currently facing.

Best regards,
Stephen
the Telerik team

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[Steve]

• MS AJAX is installed because I have the System.Web.Extensions dll in the GAC
• All sections have been added to web.config
• Telerik.Web.UI (version: 2008.1.619.20 key: 121fae78165ba3d4) is in the GAC
• I have 2 Telerik.Charting dlls in the GAC: 1) version: 1.7.2.0 key: d14f3dcc8e3e8763 and 2) version: 2.0.2.0 key: d14f3dcc8e3e8763
• Both dlls have been added as safe controls to web.config, the versions are correct

I've added the scriptmanager in without error like below:

            RadScriptManager scriptManager = new RadScriptManager();
            scriptManager.ID = "ScriptManager";
            this.Controls.Add(scriptManager);

When I try to use the RadTabStrip it generates the error in my original post.

[Steve]

I'm using custom user controls in my web part and in one of my user controls i register the Telerik assembly like below:

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<table cellpadding="10">
    <tr>
        <td align="center">
            <telerik:RadTabStrip ID="RadTabStrip1" runat="server" Skin="Default"></telerik:RadTabStrip>
        </td>
    </tr>
</table>

Is this the correct method or would i have to include the full version and key?

[Steve]

I finally got it working by referencing the GAC dll when I registered it in my user control like this:

<%@ Register TagPrefix="telerik" namespace="Telerik.Web.UI" assembly="Telerik.Web.UI, Version=2008.1.619.20, PublicKeyToken=121fae78165ba3d4, Culture=neutral" %>

That then gave me another error regarding the Script Manager and PreRender. I fixed that error by backing up my Master Page and adding the ScriptManager manually as per this thread