Error Creating Control

[Kennet]

I now spent hours to solv this dilemma. Reading posts on this forum, but nothing helps...

I add a new project, "RadControls CSharp WebApplication", wizard say for  Telerik.Web.UI: "v.2009.3.1314.35 [Installation Folder] "

But I get "Error Creating Control" on scriptmanager and AjaxManager. And I can't add any Rad Controls in DesignView (if I add a RadGrid in SourceView I get "Error Creating Control" on that to.

I'm running Windows 7 32-bit, and have VS2008 SP1 (I reinstalled SP1 to be sure). I uninstalled Telerik and installed again "RadControls_for_ASP.NET_AJAX_2009_3_1314_dev"

In Windows/assembly I see two "Telerik.Web.Design" (2009.3.1314.20 & 2009.3.1314.35) and a "Telerik.Web.Design.VSX"

Please help me, I'm so wanna start coding...

[meidianto]

Add this to the web.config

        <pages>
            <controls>
                <add tagPrefix="telerik" namespace="Telerik.Web.UI" assembly="Telerik.Web.UI"/>
            </controls>
        </pages>

If you just want to use Telerik for specific page, you can add this to the specific page instead:

<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

[Kennet]

Thanks, but that was no solution for me.

Telerik was already in web.config under "controls"

and the second suggestion, give and error in the "control" that aspx page is not found.

[Kennet]

So I did a new test, create new Website by "File>New>WebSite>RadControls CSharp WebSite"

Then I get a new error (se pic).
 
Im getting pretty frusteted now, I need this working!

[Kennet]

OK, last error was beacurse I hade an newer Telerik.Web.UI in punlicAssembly folder.


Now to the realy strange this:

If I create a new RadWebsite, and put it in default location "C:\Users\Kennet\Documents\Visual Studio 2008\WebSites\" then I UI works and I can use Rad controls.

But if I create a RadWebsite in a different location ex. "C:\C#\Websites" then I get error in UI on all Rad controls.

Why...? Userrights?  (VS2008SP1 on Windows7 32-bit)

[Schlurk]

Just to be safe, have you attempted to remove and re-add the RadControls in the GAC? For more information refer to this article:

Add/Remove Radcontrols to the GAC

Also as a side note: Having "#" in the name of a folder can potentially screw up Visual Studio so if you have only tried placing the project in a path with "C#" in it then this might be the issue why it is not working.