TypeError: read_group() takes at most 9 arguments (10 given)

The following error is generated when I use "Accounting => Reporting ==> Dashboard ==> Accounting Dashboard"

addons/ : 4010 launchpad_translations_on_behalf_of_openerp-20101215052125-i0y5f9gpuhsjreax
addons-community/ : 292 fran@fran-pc-20101213182241-2fogs8yh5u4ma31q
addons-extra/ : 5096 launchpad_translations_on_behalf_of_openerp-commiter-20101215054429-tcn8rsa5iph9u1mi
server/ : 3112 launchpad_translations_on_behalf_of_openerp-20101215043854-s3j1x291m7kl3dig
web/ : 4105 launchpad_translations_on_behalf_of_openerp-20101215043933-invwk6e5xjvykpaf

Environment Information :
System : Linux-2.6.32-26-generic-x86_64-with-Ubuntu-10.04-lucid
OS Name : posix
Distributor ID: Ubuntu
Description: Ubuntu 10.04.1 LTS
Release: 10.04
Codename: lucid
Operating System Release : 2.6.32-26-generic
Operating System Version : #48-Ubuntu SMP Wed Nov 24 10:14:11 UTC 2010
Operating System Architecture : 64bit
Operating System Locale : vi_VN.UTF8
Python Version : 2.6.5
OpenERP-Client Version : 6.0.0-rc1-1
Last revision No. & ID :1722 launchpad_translations_on_behalf_of_openerp-20101216044306-kppuqr4ine0zisnk
Traceback (most recent call last):
  File "/home/phongnt/Documents/Projects/openerp-trunk/server/bin/netsvc.py", line 489, in dispatch
    result = ExportService.getService(service_name).dispatch(method, auth, params)
  File "/home/phongnt/Documents/Projects/openerp-trunk/server/bin/service/web_services.py", line 598, in dispatch
    res = fn(db, uid, *params)
  File "/home/phongnt/Documents/Projects/openerp-trunk/server/bin/osv/osv.py", line 122, in wrapper
    return f(self, dbname, *args, **kwargs)
  File "/home/phongnt/Documents/Projects/openerp-trunk/server/bin/osv/osv.py", line 176, in execute
    res = self.execute_cr(cr, uid, obj, method, *args, **kw)
  File "/home/phongnt/Documents/Projects/openerp-trunk/server/bin/osv/osv.py", line 167, in execute_cr
    return getattr(object, method)(cr, uid, *args, **kw)
TypeError: read_group() takes at most 9 arguments (10 given)