when i created <CE:Editor id="Editor1" EditorWysiwygModeCss="../example.css" runat="server"></CE:Editor> in html view  and when i switch to design view, its says, error Creating control - Editor1..l

 

thus, when i put Protected WithEvents Editor1 As CuteEditor.Editor inside my codebehind, it says, "Type CuteEditor.Editor is not defined"