Hi, there's probably a bug in manage_exportObject: this method accepts a RESPONSE argument which default value is None, but at lines 515-517 there are the following lines: RESPONSE.setHeader('Content-type','application/data') RESPONSE.setHeader('Content-Disposition', 'inline;filename=%s.%s' % (id, suffix)) These lines are executed when the user choose to download the file from the export object form in the ZMI, so in this case RESPONSE is set correctly and there's no problem. However, when calling manage_exportObject programmatically without sending a valid RESPONSE argument these two lines raise an exception because RESPONSE is None: Error Type: AttributeError Error Value: 'None' object has no attribute 'setHeader' To see this error occur, just create a Python Script which contain the following line: context.manage_exportObject(id='Control_Panel', download=1) Click on the 'Test' tab, that's it ! Put in the Collector, issue number is 2241. hoping this helps. bye, Jerome Alet