Thread:Extension talk:ClipUpload/Unbale copy / paste image in IE and Firefox and not working even in chrome with WYSWYG editor enabled./reply (2)

Only Crome is supported. See also this thread. I would not expect this to work with WYSIWYG due to possible scripting conflicts in any browser. I am not sure if it is worth making this possible. Perhaps the creator of this extension has more information and a view on this. Cheers