Hi, When i try to install hr_timesheet module, on OE 7, latest edition (tried with many versions from April onwards ) I am getting an error

Integrity Error

The operation cannot be completed, probably due to the following: - deletion: you may be trying to delete a record while other records still reference it - creation/update: a mandatory field is not correctly set

[object with reference: name - name]

The log @ openerp shows like this

2013-05-16 17:13:12,190 15857 ERROR zsenda openerp.netsvc: Integrity Error
The operation cannot be completed, probably due to the following:
- deletion: you may be trying to delete a record while other records still refer                                                                                        ence it
- creation/update: a mandatory field is not correctly set

[object with reference: name - name]
Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.7/openerp/netsvc.py", line 292, in dispatch_r                                                                                        pc
    result = ExportService.getService(service_name).dispatch(method, params)
  File "/usr/lib/pymodules/python2.7/openerp/service/web_services.py", line 626,                                                                                         in dispatch
    res = fn(db, uid, *params)
  File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 188, in execute_k                                                                                        w
    return self.execute(db, uid, obj, method, *args, **kw or {})
  File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 172, in wrapper
    netsvc.abort_response(1, _('Integrity Error'), 'warning', msg)
  File "/usr/lib/pymodules/python2.7/openerp/netsvc.py", line 71, in abort_respo                                                                                        nse
    raise openerp.osv.osv.except_osv(description, details)
except_osv: ('Integrity Error', 'The operation cannot be completed, probably due                                                                                         to the following:\n- deletion: you may be trying to delete a record while other                                                                                         records still reference it\n- creation/update: a mandatory field is not correct                                                                                        ly set\n\n[object with reference: name - name]')
2013-05-16 17:13:12,191 15857 INFO zsenda werkzeug: 192.168.1.190 - - [16/May/20                                                                                        13 17:13:12] "POST /web/dataset/call_button HTTP/1.1" 200 -

The error is not raising when I create a new database and install the hr_timesheet at first. I have tried all these

a. Update the addon codes and upgraded modules which is required for hr_timesheet b. Deleted hr_timesheet (after some sql hacks) and replaced with latest repository module and tried to install it again.

DELETE FROM ir_model_constraint WHERE module = 216;
DELETE FROM ir_model_relation WHERE module = 216;
ALTER TABLE hr_employee DROP COLUMN uom_id, DROP COLUMN journal_id, DROP COLUMN product_id;
DROP TABLE IF EXISTS hr_analytic_timesheet CASCADE;
ALTER TABLE account_analytic_account DROP COLUMN use_timesheets;
DROP TABLE IF EXISTS hr_analytical_timesheet_employee CASCADE;
DROP TABLE IF EXISTS hr_analytical_timesheet_users CASCADE;
DROP TABLE IF EXISTS hr_sign_out_project CASCADE;
DROP TABLE IF EXISTS hr_sign_in_project CASCADE;

c. Backing up of database and restored as new database and tried to install the module again. It also have the same effect (integrity error)

The modules I have installed so far

process
account_cancel
account_voucher
purchase
web_view_editor
hr_payroll
base_import
stock
account_payment
l10n_in_hr_payroll
web_kanban
hr
account_asset
account_accountant
procurement
base_action_rule
web_graph
board
product
base_status
web_diagram
hr_attendance
web_gantt
sale_stock
account_followup
hr_expense
warning
web_tests
web_calendar
web
project
account_chart
sale_crm
hr_payroll_account
account
base_setup
auth_signup
l10n_in
edi
crm
hr_evaluation
decimal_precision
web_shortcuts
sale
analytic
hr_holidays
share
survey
base
mail
email_template
fetchmail
hr_contract
base_calendar
resource