I forgot to say: (1) I deleted the database completely and created it again. (2) I ran manage.py syncdb
However, with this code def clean_date_of_birth(self): date_of_birth = self.cleaned_data.get('date_of_birth') if date_of_birth: if date_of_birth.year < 1890: raise forms.ValidationError(u"It is very improbable...") return date_of_birth I still get the database problem. Jaroslav -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.