ProgrammingError: relation "ir_model_constraint" does not exist

plz post a detailed traceback, and explanations about what you did to get that error.

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I have the same issue on a migration from 6.1 to V7.
ERROR prodtest1_migrated openerp.sql_db: Programming error: relation "ir_model_constraint" does not exist

Same question to you Errol. This error is just a symptom that the migration of the base module failed. Please paste full server logs on some pastebin site of your migration attempt with server loglevel DEBUG.

Can I post it here? Don't have pastebin.

Okay signed up for pastebin already. Would you like the migration.log or the openerp-server.log file?

Done.. Pastebin bigdawgbz..

Got a link?

http://pastebin.com/6PpuUndS

Link says: pastebin is private.

Okay, fixed it..

This is the actual error: Field type not found in browse_record(ir.actions.act_window, 338)

FIrst thing to check: is there an entry in your ir_act_window table with id 338?

I was able to get pass that error and stumbled upon another.

2014-08-07 18:40:24,372 28368 INFO production_test1_migrated openerp.modules.loading: module account: loading company_view.xml
2014-08-07 18:40:24,394 28368 ERROR production_test1_migrated openerp.osv.orm: Can't find field 'property_reserve_and_surplus_account' in the following view parts composing the view of object model 'res.company':
 * res.company.form.inherit

Either you wrongly customized this view, or some modules bringing those views are not compatible with your current data model
2014-08-07 18:40:24,396 28368 ERROR production_test1_migrated openerp.addons.base.ir.ir_ui_view: Can't render view account.view_company_inherit_form for model: res.company
Traceback (most recent call last):
  File "/home/openerp/server/openerp/addons/base/ir/ir_ui_view.py", line 126, in _check_render_view
    fvg = self.pool.get(view.model).fields_view_get(cr, uid, view_id=view.id, view_type=view.type, context=context)
  File "/home/openerp/server/openerp/osv/orm.py", line 2278, in fields_view_get
    xarch, xfields = self.__view_look_dom_arch(cr, user, result['arch'], view_id, context=ctx)
  File "/home/openerp/server/openerp/osv/orm.py", line 1955, in __view_look_dom_arch
    raise except_orm('View error', msg)
except_orm: ('View error', u"Can't find field 'property_reserve_and_surplus_account' in the following view parts composing the view of object model 'res.company':\n * res.company.form.inherit\n\nEither you wrongly customized this view, or some modules bringing those views are not compatible with your current data model")
2014-08-07 18:40:24,397 28368 ERROR production_test1_migrated openerp.tools.convert: Parse error in /home/openerp/addons/account/company_view.xml:4:
<record model="ir.ui.view" id="view_company_inherit_form">
            <field name="name">res.company.form.inherit</field>
            <field name="inherit_id" ref="base.view_company_form"/>
            <field name="model">res.company</field>
            <field name="arch" type="xml">
                <notebook position="inside">
                    <page string="Overdue Payments" position="inside">
                        <separator string="Overdue Payments Message" colspan="4"/>
                        <field name="overdue_msg" nolabel="1" colspan="4"/>
                    </page>
                </notebook>
            </field>
        </record>
Traceback (most recent call last):
  File "/home/openerp/server/openerp/tools/convert.py", line 852, in parse
    self._tags[rec.tag](self.cr, rec, n)
  File "/home/openerp/server/openerp/tools/convert.py", line 819, in _tag_record
    id = self.pool.get('ir.model.data')._update(cr, self.uid, rec_model, self.module, res, rec_id or False, not self.isnoupdate(data_node), noupdate=self.isnoupdate(data_node), mode=self.mode, context=rec_context )
  File "/home/openerp/server/openerp/addons/base/ir/ir_model.py", line 944, in _update
    model_obj.write(cr, uid, [res_id], values, context=context)
  File "/home/openerp/server/openerp/addons/base/ir/ir_ui_view.py", line 214, in write
    return super(view, self).write(cr, uid, ids, vals, context)
  File "/home/openerp/server/openerp/osv/orm.py", line 4282, in write
    self._validate(cr, user, ids, context)
  File "/home/openerp/server/openerp/osv/orm.py", line 1562, in _validate
    raise except_orm('ValidateError', '\n'.join(error_msgs))
except_orm: ('ValidateError', u'Error occurred while validating the field(s) arch: Invalid XML for View Architecture!')
2014-08-07 18:40:24,406 28368 INFO production_test1_migrated werkzeug: 192.168.1.96 - - [07/Aug/2014 18:40:24] "GET /web/webclient/css?db=production_test1_migrated HTTP/1.1" 200 -

View error

Can't find field 'in_use' in the following view parts composing the view of object model 'product.product':
* citrus.product.tree

Either you wrongly customized this view, or some modules bringing those views are not compatible with your current data model