I'm learning OpenERP development and I'm stuck in a problem which I think should be obvious but I really can't get what's going on ! :(

I made a very simple module but I can't install it .. it keeps saying

ValidateError

Error occurred while validating the field(s) arch: Invalid XML for View Architecture!

Here is my module :

__init__.py

import testmod

.

__openerp__.py

{
'name': "Test Module",
'description': "Basic example of a (future) web module",
'category': 'Hidden',
'depends': ['base'],
'data': [
    'test_view.xml',
],
'installable': True,
'application': False,
'auto_install': False,
}

.

testmod.py

from openerp.osv import fields, osv

class testmod_test(osv.Model):

    _name = 'testmod.test'
    _description = 'Test Model'
    _columns = {
    'test1': fields.char('Test 1', size=32, required=True, help='Test 1 help'),
    'test2': fields.float('Test 2', help='Test 2 help'),
    }

testmod_test()

.

test_view.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
<data>

<record id="testmod_test_form" model="ir.ui.view">
    <field name="name">testmod.test.form</field>
    <field name="model">testmod.test</field>
    <field name="arch" type="xml">
      <form string="Test" version="7.0">  
        <field name="test1" />
        <field name="test2"/>

      </form>
    </field>
</record>

<record id="testmod_test_tree" model="ir.ui.view">
  <field name="name">testmod.test.tree</field>
  <field name="model">testmod.test</field>
  <field name="arch" type="xml">
    <tree string="Test">
      <field name="test1" />
       <field name="test2"/>
    </tree>
  </field>
</record>



<record model="ir.actions.act_window" id="action_testmod_test">
  <field name="name">Test</field>
  <field name="res_model">testmod.test</field>
  <field name="view_type">form</field>
  <field name="view_mode">tree,form</field>

</record>


<menuitem 
          name="Test" 
          id="menu_testmod_test" 

          />

<menuitem 
          name="Test sub" 
          parent="menu_testmod_test"
          id="menu_testmod_test_sub" 

          />          
<menuitem
        name="Sub Test"
        id="menu_subtest"
        parent="menu_testmod_test_sub"
        action="action_testmod_test"    
        />


</data>
</openerp>

Here is the full log error :

2013-09-17 19:22:19,199 1674 INFO emad92 openerp.modules.loading: loading 1 modules...
2013-09-17 19:22:19,220 1674 INFO emad92 openerp.modules.loading: loading 10 modules...
2013-09-17 19:22:19,251 1674 INFO emad92 openerp.modules.loading: loading 11 modules...
2013-09-17 19:22:19,252 1674 INFO emad92 openerp.modules.module: module testmod: creating or updating database tables
2013-09-17 19:22:19,255 1674 INFO emad92 openerp.modules.loading: module testmod: loading test_view.xml
2013-09-17 19:22:19,269 1674 ERROR emad92 openerp.addons.base.ir.ir_ui_view: Can't render view  for model: testmod.test
Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.7/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)
AttributeError: 'NoneType' object has no attribute 'fields_view_get'
2013-09-17 19:22:19,276 1674 ERROR emad92 openerp.tools.convert: Parse error in /opt/modules-openerp/testmod/test_view.xml:5: 
<record id="testmod_test_form" model="ir.ui.view">
        <field name="name">testmod.test.form</field>
        <field name="model">testmod.test</field>
        <field name="arch" type="xml">
          <form string="Test" version="7.0">  
            <field name="test1"/>
            <field name="test2"/>

          </form>
        </field>
    </record>
Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.7/openerp/tools/convert.py", line 847, in parse
    self._tags[rec.tag](self.cr, rec, n)
  File "/usr/lib/pymodules/python2.7/openerp/tools/convert.py", line 814, 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 "/usr/lib/pymodules/python2.7/openerp/addons/base/ir/ir_model.py", line 964, in _update
    res_id = model_obj.create(cr, uid, values, context=context)
  File "/usr/lib/pymodules/python2.7/openerp/addons/base/ir/ir_ui_view.py", line 103, in create
    return super(view, self).create(cr, uid, values, context)
  File "/usr/lib/pymodules/python2.7/openerp/osv/orm.py", line 4472, in create
    self._validate(cr, user, [id_new], context)
  File "/usr/lib/pymodules/python2.7/openerp/osv/orm.py", line 1546, 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!')
2013-09-17 19:22:19,278 1674 ERROR emad92 openerp.netsvc: ValidateError
Error occurred while validating the field(s) arch: Invalid XML for View Architecture!
Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.7/openerp/netsvc.py", line 292, in dispatch_rpc
    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_kw
    return self.execute(db, uid, obj, method, *args, **kw or {})
  File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 144, in wrapper
    raise except_osv(inst.name, inst.value)
except_osv: ('ValidateError', u'Error occurred while validating the field(s) arch: Invalid XML for View Architecture!')
2013-09-17 19:22:19,283 1674 INFO emad92 werkzeug: 127.0.0.1 - - [17/Sep/2013 19:22:19] "POST /web/dataset/call_button HTTP/1.1" 200 -

and I'm using OpenERP 7.0 in a linux platform (ubuntu 13.04)

Any help will be appreciated :), Thanks in advance