Hi, I'm using Zope-2.6.1 with Python-2.1.3 on Debian GNU/Linux. I've created a custom "folder based" Zope product with several custom properties of several types : string, date, text, selection, boolean and tokens. When I try to update these properties from the common "Properties" page, I can read properties values but when I try to submit the form, Zope raises an exception : "String error: string index out of range". But everything is OK if I update the same properties from a custom form available to my site users !! This exception is not logged to the site error log, so I can't get any traceback. Thanks for any help. Thierry -- Linux every day, keeps Dr Watson away... http://gpc.sourceforge.net -- http://www.ulthar.net