[Alfa1]

So if you do not click a delete button and there is no warning anywhere, this just deletes all images.

Well there is obviously nothing to do about this then. But please consider to change your addon, to avoid that others will delete all their images as well.
I understand that should have read this better. But at the same time this function is accessible to whole member groups. (normally 5,6,7) None of the staff of any site using your addon will normally have read your comment in this thread, so it is likely they will make the same mistake.

I will send out a mass email to all my members apologizing.