valueError : no reference in (module.xml_id)

Environment Information :
System : Windows-XP-5.1.2600-SP2
OS Name : nt
Operating System Release : XP
Operating System Version : 5.1.2600
Operating System Architecture : 32bit
Operating System Locale : en_US.cp1252
Python Version : 2.5.2
OpenERP-Client Version : 6.0.3
Last revision No. & ID :Bazaar Package not Found !Traceback (most recent call last):
  File "netsvc.pyo", line 489, in dispatch
  File "service\web_services.pyo", line 599, in dispatch
  File "osv\osv.pyo", line 122, in wrapper
  File "osv\osv.pyo", line 176, in execute
  File "osv\osv.pyo", line 167, in execute_cr
  File "C:\Program Files\OpenERP 6.0\Server\addons\base\module\wizard\base_module_upgrade.py", line 98, in upgrade_module
  File "pooler.pyo", line 60, in restart_pool
  File "pooler.pyo", line 39, in get_db_and_pool
  File "addons\__init__.pyo", line 883, in load_modules
  File "addons\__init__.pyo", line 748, in load_module_graph
  File "addons\__init__.pyo", line 641, in load_init_update_xml
  File "tools\convert.pyo", line 975, in convert_xml_import
  File "tools\convert.pyo", line 865, in parse
  File "tools\convert.pyo", line 826, in _tag_record
  File "tools\convert.pyo", line 152, in _eval_xml
  File "tools\convert.pyo", line 146, in _process
  File "tools\convert.pyo", line 842, in id_get
  File "tools\convert.pyo", line 851, in model_id_get
  File "tools\misc.pyo", line 823, in cached_result
  File "C:\Program Files\OpenERP 6.0\Server\addons\base\ir\ir_model.py", line 609, in get_object_reference
  File "tools\misc.pyo", line 823, in cached_result
  File "C:\Program Files\OpenERP 6.0\Server\addons\base\ir\ir_model.py", line 602, in _get_id
ValueError: No references to wiza.wizard_form_action

like this error in my module (wiza) and xml_id (wizard_form_action)
please help me for solve this problem

thanks & regard
sandeep