I'm currently using Image Rotator Widget and another image plugin and the rotator's "send to image rotator" button is present when trying to upload and image to the other image plugin. When the button is clicked, nothing happens and the thickbox closes.
Steps to reproduce:
install the image rotator plugin
install this plugin http://wordpress.org/extend/plugins/image-widget/ "Image Widget"
attempt to upload and place an image in the Image Widget.