Hi All

Please help. We can't open POS sessions, all of a sudden. When we try we get this error:

Odoo Server Error Traceback (most recent call last):

  File "/odoo/odoo-server/openerp/http.py", line 647, in _handle_exception

    return super(JsonRequest, self)._handle_exception(exception)

  File "/odoo/odoo-server/openerp/http.py", line 684, in dispatch

    result = self._call_function(**self.params)

  File "/odoo/odoo-server/openerp/http.py", line 320, in _call_function

    return checked_call(self.db, *args, **kwargs)

  File "/odoo/odoo-server/openerp/service/model.py", line 118, in wrapper

    return f(dbname, *args, **kwargs)

  File "/odoo/odoo-server/openerp/http.py", line 313, in checked_call

    result = self.endpoint(*a, **kw)

  File "/odoo/odoo-server/openerp/http.py", line 963, in __call__

    return self.method(*args, **kw)

  File "/odoo/odoo-server/openerp/http.py", line 513, in response_wrap

    response = f(*args, **kw)

  File "/odoo/odoo-server/addons/web/controllers/main.py", line 901, in call_button

    action = self._call_kw(model, method, args, {})

  File "/odoo/odoo-server/addons/web/controllers/main.py", line 889, in _call_kw

    return getattr(request.registry.get(model), method)(request.cr, request.uid, *args, **kwargs)

  File "/odoo/odoo-server/openerp/api.py", line 250, in wrapper

    return old_api(self, *args, **kwargs)

  File "/odoo/odoo-server/addons/point_of_sale/point_of_sale.py", line 317, in open_session_cb

    session_id = proxy.create(cr, uid, values, context=context)

  File "/odoo/odoo-server/openerp/api.py", line 250, in wrapper

    return old_api(self, *args, **kwargs)

  File "/odoo/odoo-server/addons/point_of_sale/point_of_sale.py", line 545, in create

    return super(pos_session, self).create(cr, is_pos_user and SUPERUSER_ID or uid, values, context=context)

  File "/odoo/odoo-server/openerp/api.py", line 250, in wrapper

    return old_api(self, *args, **kwargs)

  File "/odoo/odoo-server/openerp/api.py", line 354, in old_api

    result = method(recs, *args, **kwargs)

  File "/odoo/odoo-server/openerp/models.py", line 4157, in create

    record = self.browse(self._create(old_vals))

  File "/odoo/odoo-server/openerp/api.py", line 248, in wrapper

    return new_api(self, *args, **kwargs)

  File "/odoo/odoo-server/openerp/api.py", line 490, in new_api

    result = method(self._model, cr, uid, *args, **old_kwargs)

  File "/odoo/odoo-server/openerp/models.py", line 4376, in _create

    self.create_workflow(cr, user, [id_new], context=context)

  File "/odoo/odoo-server/openerp/api.py", line 250, in wrapper

    return old_api(self, *args, **kwargs)

  File "/odoo/odoo-server/openerp/models.py", line 3592, in create_workflow

    workflow.trg_create(uid, self._name, res_id, cr)

  File "/odoo/odoo-server/openerp/workflow/__init__.py", line 55, in trg_create

    return WorkflowService.new(cr, uid, res_type, res_id).create()

  File "/odoo/odoo-server/openerp/workflow/service.py", line 63, in create

    WorkflowInstance.create(self.session, self.record, wkf_id)

  File "/odoo/odoo-server/openerp/workflow/instance.py", line 36, in create

    WorkflowItem.create(session, record, activity, instance_id, stack)

  File "/odoo/odoo-server/openerp/workflow/workitem.py", line 77, in create

    workflow_item.process(stack=stack)

  File "/odoo/odoo-server/openerp/workflow/workitem.py", line 102, in process

    ok = self._split_test(activity['split_mode'], signal, stack)

  File "/odoo/odoo-server/openerp/workflow/workitem.py", line 227, in _split_test

    cr.executemany('insert into wkf_witm_trans (trans_id,inst_id) values (%s,%s)', transitions)

InternalError: invalid page in block 0 of relation base/29273/17061