Hi Michael, I'm having the same problem described in ticket 370.
Eg.: mapper(User, users_table, properties = dict( preferences = relation(UserPrefs, cascade="all, delete-orphan"), )) when I try to do this: u = session.query(User).get(1) u.preferences.clear() session.flush() it thows a ConcurrentModificationError exception. I'm using SA 0.3.7, kinterbasdb 3.2, Firebird 1.5...if that matters... Do you have any news about it ? TIA, Roger --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~----------~----~----~----~------~----~------~--~---