I created a standard (non-Telerik) Windows forms app using VS2010.  After adding a few forms, I used the conversion option under "Telerik/RadControls for WinForms" to add access to the Telerik controls.  This added the WinControls assembly references to the project (visible in Solution Explorer), but did not make the new controls visible in the Toolbox.
   How can I gain access to these controls?  Reopening the project and restarting VS was not effective.  I can use the Telerik controls in a fresh project, update them from within VS, and generally use them quite well in other circumstances.

   Thanks!

Hello Mike,

Thanks for contacting us.

Since Q3 2010 the easiest way to change the version of the Telerik controls in the toolbox is using the Toolbox Configurator. It can be launched from the Telerik menu, RadControls for WinForms -> Launch Toolbox Configurator.

If the version of your Visual Studio Extensions is older than Q3 2010, please refer to the following article - Adding RadControls to Visual Studio Toolbox.

I hope this will help.

Best regards,
Chavdar
the Telerik team