Multiple File Upload with attachment_fu

I have been trying to implement a multiple file upload page for uploading photo's. My single upload page works without problems. I tried to use the aurigma image uploader (as used by facebook, geni, etc.). I had it working fine when i was using the flex_image upload plugin but once i moved to attachment_fu (which i prefer because of its amazon support), multifile upload fails when trying to store the model object that is declared as has_attachment.

Has anyone had any experience with using other multiple image upload controls? or does anyone know what my problem may be. I think it has something to do with the image encoding peformed by aurigma which may conflict with the backend work being done by Rmagick in attachment_fu