Hi, this error is really weird. After lots of intents, finally I discovered that it happens whenever I save the sign: "<" in a text field of a ZClass that I implemented. If I don't write this symbol and save the object, it works. I know the code worked before in Zope 2.5.1 because there is one object stored with that string, but when I try to modify it or create a new one (with the string previously mentioned) in zope 2.6.1, I get this error: Error Type: SystemError Error Value: A TaintedString cannot be pickled. Code that caused this TaintedString to be stored should be more careful with untrusted data from the REQUEST. Traceback (innermost last): * Module ZPublisher.Publish, line 150, in publish_module * Module ZPublisher.Publish, line 114, in publish * Module Zope.App.startup, line 182, in zpublisher_exception_hook * Module ZPublisher.Publish, line 102, in publish * Module Zope.App.startup, line 200, in commit * Module ZODB.Transaction, line 235, in commit * Module ZODB.Transaction, line 349, in _commit_objects * Module ZODB.Connection, line 389, in commit __traceback_info__: (('*vg7oXuDosKfgZhLfKvrI/Q==', 'InternshipClass'), '\x00\x00\x00\x00\x00\x07\\\x1d', '') * Module ZPublisher.TaintedString, line 83, in __getstate__ SystemError: (see above) And the external python script that generates it: def modifyJobOfferObject(self,jobOffer,jobTitle,jobDescription,jobCompanyName,jo bCompanyVision,jobPositionOffered,profile,contact,jobCountry,jobArea,email,e ncodedEmail): jobOffer.propertysheets.JobOfferPropertySheet.manage_changeProperties(self.R EQUEST,title=jobTitle,description=jobDescription,companyName=jobCompanyName, companyVision=jobCompanyVision,positionOffered=jobPositionOffered,jobProfile =profile,jobContact=contact,country=jobCountry,area=jobArea,email=email,enco dedEmail=encodedEmail) jobOffer.manage_changeProperties(self.REQUEST,title=jobTitle,description=job Description,companyName=jobCompanyName,companyVision=jobCompanyVision,positi onOffered=jobPositionOffered,jobProfile=profile,jobContact=contact,country=j obCountry,area=jobArea,email=email,encodedEmail=encodedEmail) I've tried anything without any success. What could be the problem? Thanks in advanced, Josef