Starting with Q3 2010 we introduced the Toolbox Configuration utility. Its purpose is to choose which version of Telerik UI for Silverlight to be populated in the Visual Studio’s Toolbox. The user can select among all versions of Telerik UI that are currently on the machine and have been either installed or downloaded using the VS Extensions.
The Toolbox Configurator can be launched from the Telerik menu:
After running the Toolbox Configurator it shows the version of the currently installed distribution (if available). The user can make his selection using the dropdown menu which lists all versions discovered on the machine.
When the Finish button is clicked Visual Studio will be restarted so that the changes can take effect.
The Toolbox Configurator will overwrite the toolbox registration performed during installation. Additionally, after configuring the toolbox, the 'Add References' dialog will suggest Telerik assemblies from the selected distribution only and you will see the selected controls in the Toolbox | Choose Items context menu.
The Toolbox Configurator is supported in Visual Studio 2010, 2012, 2013 and 2015.