I added a reference to CuteEditor.dll to my project references and copied the client files to my application directory.  I then attempted to follow the instructions for installing Cute Editor for .NET in my Visual Studio toolbox.  Where the toolbox context menu in your instructions shows a Customize Toolbox option, mine shows only an Add/Remove Items option.  When I click on this option I get the same Customize Toolbox dialog as your example.  However, when I browse to the cuteeditor.dll file and attempt to add it to the toolbox I get an error that says "Insufficient state to deserialize the object.  More information is needed."  Any clues?  Anyone?