Hi, There is a strange problem with PIL. a code similar to ----- def foo(im): sio=StringIO.StringIO(im) i=PIL.Image.open(sio) i.resize((newx,newy)) of=StringIO.StringIO() i.save(of,"jpeg") return of.getdata() ------------ Throws following exception inside Zope but works well in plain python. Any suggestions? Zope Error Zope has encountered an error while publishing this resource. exceptions.IOError Sorry, a Zope error occurred. Traceback (innermost last): File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 214, in publish_module File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 165, in publish File /usr/lib/zope/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: manage_addPicture) File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 102, in call_object (Object: manage_addPicture) File Newsitem.py, line 167, in manage_addPicture (Object: ElementWithAttributes) File Newsitem.py, line 104, in resize_image IOError: (0, 'Error')