run the cmd through terminal

python openerp-server -u all -d <database_name>

hop it will solve your problem

and also create the username in database as your system user name

This is not an answer, but hopefully it will help.

We have a different version, saas 7.n, but maybe this part of the code is the same. In mail_message.py, _search(), lines 615 to 618:

 # Rules do not apply to administrator
 if uid == SUPERUSER_ID:
    return super(mail_message, self)._search(cr, uid, args, offset=offset, limit=limit, order=order,
           context=context, count=count, access_rights_uid=access_rights_uid)

So is it a good guess that you are administrator? It looks as if _search is returning a list of message id's, and if you are not administrator then you get a filtered list (but what is filtered out?). The unfiltered list might contain a message that is in the wrong state. I would add to the question 'what is getting filtered out, and why?'

We are getting a similar traceback,

 2014-02-28 19:00:46,281 22819 ERROR new openerp.netsvc: Invalid field 'state' in leaf "<osv.ExtendedLeaf?: ('state', 'not in', ['draft', 'sent', 'cancel']) on mail_message (ctx: )>"
 Traceback (most recent call last):
    File "/root/saas/server/openerp/netsvc.py", line 236, in dispatch_rpc
        result = dispatch(method, params)
    File "/root/saas/server/openerp/service/model.py", line 36, in dispatch
        res = fn(db, uid, *params)
    File "/root/saas/server/openerp/service/model.py", line 160, in execute_kw
        return execute(db, uid, obj, method, *args, **kw or {})
    File "/root/saas/server/openerp/service/model.py", line 111, in wrapper
        return f(dbname, *args, **kwargs)
    File "/root/saas/server/openerp/service/model.py", line 170, in execute
        res = execute_cr(cr, uid, obj, method, *args, **kw)
    File "/root/saas/server/openerp/service/model.py", line 157, in execute_cr
        return getattr(object, method)(cr, uid, *args, **kw)
    File "/root/saas/addons/mail/mail_message.py", line 562, in message_read
        parent_tree[tree_parent_id].append(self._message_read_dict(cr, uid, message_tree[message_id], parent_id=tree_parent_id, context=context))
    File "/root/saas/addons/mail/mail_message.py", line 397, in _message_read_dict
        'to_read': message.to_read,
    File "/root/saas/server/openerp/osv/orm.py", line 483, in getattr
        return self[name]
    File "/root/saas/server/openerp/osv/orm.py", line 398, in getitem
        field_values = self._table.read(self._cr, self._uid, ids, field_names, context=self._context, load="_classic_write")
    File "/root/saas/addons/mail/mail_message.py", line 785, in read
        res = super(mail_message, self).read(cr, uid, ids, fields=fields, context=context, load=load)
    File "/root/saas/server/openerp/osv/orm.py", line 3610, in read
        result = self._read_flat(cr, user, select, fields, context, load)
    File "/root/saas/server/openerp/osv/orm.py", line 3725, in _read_flat
        res2 = self._columns[f].get(cr, self, ids, f, user, context=context, values=res)
    File "/root/saas/server/openerp/osv/fields.py", line 1134, in get
        result = self._fnct(obj, cr, uid, ids, name, self._arg, context)
    File "/root/saas/addons/mail/mail_message.py", line 93, in _get_to_read
        ], context=context)
    File "/root/saas/server/openerp/osv/orm.py", line 2355, in search
        return self._search(cr, user, args, offset=offset, limit=limit, order=order, context=context, count=count)
    File "/root/saas/server/openerp/osv/orm.py", line 4875, in _search
        self._apply_ir_rules(cr, user, query, 'read', context=context)
    File "/root/saas/server/openerp/osv/orm.py", line 4755, in _apply_ir_rules
        rule_where_clause, rule_where_clause_params, rule_tables = rule_obj.domain_get(cr, uid, self._name, mode, context=context)
    File "/root/saas/server/openerp/addons/base/ir/ir_rule.py", line 156, in domain_get
        query = self.pool[model_name]._where_calc(cr, SUPERUSER_ID, dom, active_test=False)
    File "/root/saas/server/openerp/osv/orm.py", line 4703, in _where_calc
        e = expression.expression(cr, user, domain, self, context)
    File "/root/saas/server/openerp/osv/expression.py", line 641, in init
        self.parse(cr, uid, context=context)
    File "/root/saas/server/openerp/osv/expression.py", line 840, in parse
        right_ids = relational_model.search(cr, uid, [(field_path[1], operator, right)], context=context)
    File "/root/saas/addons/base_calendar/crm_meeting.py", line 134, in search
        return super(mail_message, self).search(cr, uid, args, offset=offset, limit=limit, order=order, context=context, count=count)
    File "/root/saas/server/openerp/osv/orm.py", line 2355, in search
        return self._search(cr, user, args, offset=offset, limit=limit, order=order, context=context, count=count)
    File "/root/saas/addons/portal/mail_message.py", line 41, in _search
        context=context, count=False, access_rights_uid=access_rights_uid)
    File "/root/saas/addons/mail/mail_message.py", line 618, in _search
        context=context, count=count, access_rights_uid=access_rights_uid)
    File "/root/saas/server/openerp/osv/orm.py", line 4874, in _search
        query = self._where_calc(cr, user, args, context=context)
    File "/root/saas/server/openerp/osv/orm.py", line 4703, in _where_calc
        e = expression.expression(cr, user, domain, self, context)
    File "/root/saas/server/openerp/osv/expression.py", line 641, in init
        self.parse(cr, uid, context=context)
    File "/root/saas/server/openerp/osv/expression.py", line 805, in parse
        raise ValueError?("Invalid field %r in leaf %r" % (left, str(leaf)))
 ValueError?: Invalid field 'state' in leaf "<osv.ExtendedLeaf?: ('state', 'not in', ['draft', 'sent', 'cancel']) on mail_message (ctx: )>"

When you post traceback or source you can use 'preformatted text' (see the icon with 1's and 0's?)