This is a problem I met for the second time.

I've made a custom module with all company parameter. this morning I wanted to work on Accounting functionality on a testing database. I duplicate the product database and my param module.

So now I have 2 databases and 2 Modules. One for production and one for testing.

I uninstall the param module from testing database and it's ok. I try to install the testing module and the system broke. I can't go to the login page and I have a message like : "the column 'test' don't exist in res_partner database". But I have a script that add this column.

Testing module is exactly the same than param module.

I don't understand why the same module don't work if I uninstall and reinstall a copy of it.

someone can explain me what I'm doing wrong?

Thanks for reading.

edit: My module code My xml file (I have comment the reference to the new field) <openerp> <data>

        <record model="ir.ui.view" id="partner_view_form_juliana">
            <field name="name">partner.view.form.juliana</field>
            <field name="model">res.partner</field>
            <field name="type">form</field>
            <field name="inherit_id" ref="base.view_partner_form"/>
            <field name="priority">52</field>
            <field name="arch" type="xml">
                <!--<xpath expr="//field[@name='nace_id']" position="before">
                    <field name="nom_commercial" attrs="{'invisible': [('is_company','!=',True)]}"/>
                </xpath>-->
                <xpath expr="//field[@name='siren']" position="after">
                    <field name="societe_com" widget="url" attrs="{'invisible': [('is_company','!=',True)]}"/>
                </xpath>
                <xpath expr="//field[@name='child_ids']/form/div/group/field[@name='mobile']" position="after">
                    <field name="user_id" />
                </xpath>
            </field>
        </record>
        <!--
        <record id="view_res_partner_filter_juliana" model="ir.ui.view">
            <field name="name">res.partner.select.juliana</field>
            <field name="model">res.partner</field>
            <field name="inherit_id" ref="base.view_res_partner_filter"/>
            <field name="arch" type="xml">
                <xpath expr="//field[@name='user_id']" position="after">
                    <field name="nom_commercial"/>
                </xpath>
            </field>
        </record> -->

    </data>
</openerp>

res_partner.py:

# -*- coding: utf-8 -*-
from openerp.osv import osv, fields
import logging

_logger = logging.getLogger("PARAM-JULIANA")
#
#Ajout du lien vers société.com
#

class res_partner(osv.osv):
    _name = 'res.partner'
    _inherit = 'res.partner'

    def _get_societe_com_link(self, cr, uid, ids, name, args, context=None):
        result = dict.fromkeys(ids, False)
        res = {}
        text=""
        for obj in self.browse(cr, uid, ids, context=context):
            res[obj.id]=text
            if obj.siren  :
                text = "http://www.societe.com/cgi-bin/recherche?rncs=" + obj.siren
                res[obj.id]=text
        return res

    _columns = {
        'societe_com': fields.function(_get_societe_com_link, type='char', size=64, string='societe.com'),
        'nom_commercial': fields.char('Nom Commercial', size=128, select=True)
    }