Dear wolf11th,

 

Please remove ConfigurationPath="~/CuteSoft_Client/CuteEditor/Configuration/AutoConfigure/MyTool.config", change your code to:
<CE:Editor ID="Editor1" runat="server" ShowCodeViewToolBar="False"  Width="100%" ShowPreviewMode="False" ResizeMode="None" EditorOnPaste="PastePureText" EnableBrowserContextMenu="false" ThemeType="Office2003" ShowToolBar="false">
</CE:Editor>
I have tested this snippet, it works.

 

Regards,

Eric