I posted the whole problem to the list earlier but had no takers. So I'm trying to break it down and figure it out that way. Does anyone know what causes unpickleable errors? I've got a dtml-method which gets called from another dtml-method/form where a user enter's data. (namely a file to upload, and a check box indicating whether or not they want the file converted). All my dtml method does is change data in a few already-defined properties. I've commented out my dtml statements and put them back in one at a time, to see if I can isolate the one which is causing the error. Here it is: <dtml-call "manage_changeProperties(upload_file=REQUEST['new_file'],)"> "new_file" is the name of an input field of type "file" in the form the dtml method containing the line above was called from. If i replace the line above with the following: <dtml-call "manage_changeProperties(upload_file='This is a test',)"> things work fine. However, as it is, I get an Unpickleable Error (see traceback below). I'm not sure what difference it makes, but the file I'm supposedly uploading is a MSWord Document. Does anyone have ideas? Thanks! -Andy Error Type: UnpickleableError Error Value: Cannot pickle objects ---------- Traceback (innermost last): File /usr/local/Zope/lib/python/ZPublisher/Publish.py, line 214, in publish_module File /usr/local/Zope/lib/python/ZPublisher/Publish.py, line 179, in publish File /usr/local/Zope/lib/python/Zope/__init__.py, line 202, in zpublisher_exception_hook (Object: asdf) File /usr/local/Zope/lib/python/ZPublisher/Publish.py, line 169, in publish File /usr/local/Zope/lib/python/ZODB/Transaction.py, line 237, in commit File /usr/local/Zope/lib/python/ZODB/Connection.py, line 325, in commit (Info: (('*sznqgGH9XT1HaHOlGQ5Zsg==', 'SmartDTML'), '\000\000\000\000\000\000\002h', '')) UnpickleableError: (see above) IMPORTANT NOTICE: If you are not using HushMail, this message could have been read easily by the many people who have access to your open personal email messages. Get your FREE, totally secure email address at http://www.hushmail.com.