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To enable the image management function of the Cute Editor control, you must set up a managed image gallery folder.

This is simply a folder in which you will be placing images for your users to use in their content. Create a folder in your application’s root folder. (For most applications, this is your web server’s root folder.) The folder can be named something like /uploads/,  /images or /UserImages. 

Make sure that the Internet Guest Account has Read+Write permissions on this folder and its contents.

 

Please check the following article: