Dear
Gigantoad,
Please follow steps:
1. click button "Insert Image"
2. select the files that you want to delete
3. click scissors icon
It will delete the selected images.
In file CuteEditor_for_NET6\Framework 2.0\CuteSoft_Client\CuteEditor\Configuration\Security\Default.config, you can find:
<security name="AllowDelete">true</security>
It decide whether you can delete uploaded files.
Regards,
Eric