Above changes resolve installation without demodata.

With demo data still a fatal error exist preventing installation:
Environment Information : 
System : Linux-2.6.32-22-generic-x86_64-with-Ubuntu-10.04-lucid
OS Name : posix
Distributor ID:	Ubuntu
Description:	Ubuntu 10.04 LTS
Release:	10.04
Codename:	lucid
Operating System Release : 2.6.32-22-generic
Operating System Version : #33-Ubuntu SMP Wed Apr 28 13:28:05 UTC 2010
Operating System Architecture : 64bit
Operating System Locale : nl_NL.UTF8
Python Version : 2.6.5
OpenERP-Client Version : 5.0.10
Last revision No. & ID :Bazaar Package not Found !Traceback (most recent call last):
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/netsvc.py", line 247, in dispatch
    result = LocalService(service_name)(method, *params)
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/netsvc.py", line 76, in __call__
    return getattr(self, method)(*params)
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/service/web_services.py", line 633, in execute
    return self._execute(db, uid, wiz_id, datas, action, context)
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/service/web_services.py", line 613, in _execute
    return wiz.execute(db, uid, self.wiz_datas[wiz_id], action, context)
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/wizard/__init__.py", line 178, in execute
    res = self.execute_cr(cr, uid, data, state, context)
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/wizard/__init__.py", line 73, in execute_cr
    action_res = action(self, cr, uid, data, context)
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/addons/base/module/wizard/wizard_module_upgrade.py", line 92, in _upgrade_module
    db, pool = pooler.restart_pool(cr.dbname, update_module=True)
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/pooler.py", line 62, in restart_pool
    return get_db_and_pool(db_name, force_demo, status, update_module=update_module)
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/pooler.py", line 40, in get_db_and_pool
    addons.load_modules(db, force_demo, status, update_module)
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/addons/__init__.py", line 740, in load_modules
    r = load_module_graph(cr, graph, status, report=report)
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/addons/__init__.py", line 642, in load_module_graph
    tools.convert_xml_import(cr, m, fp, idref, mode=mode, noupdate=True, **kwargs)
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/tools/convert.py", line 874, in convert_xml_import
    obj.parse(doc.getroot())
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/tools/convert.py", line 771, in parse
    self._tags[rec.tag](self.cr, rec, n)
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/tools/convert.py", line 735, in _tag_record
    f_val = self.id_get(cr, f_model, f_ref)
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/tools/convert.py", line 756, in id_get
    result = self.pool.get('ir.model.data')._get_id(cr, self.uid, mod, id_str)
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/tools/misc.py", line 683, in cached_result
    result2 = fn(self2, cr, *args[:self.skiparg-2], **kwargs2)
  File "/usr/local/lib/python2.6/dist-packages/openerp-server/addons/base/ir/ir_model.py", line 447, in _get_id
    raise ValueError('No references to %s.%s' % (module, xml_id))
ValueError: No references to modec_methodo_support.project_step_1