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Thanks for answer. I installed now in Ubuntu 12.04 LTS, and error appear:
OpenERP Server Error
Client Traceback (most recent call last):
File "/opt/openerp/server/openerp/addons/web/http.py", line 204, in dispatch
response["result"] = method(self, **self.params)
File "/opt/openerp/server/openerp/addons/web/controllers/main.py", line 1134, in call_button
action = self._call_kw(req, model, method, args, {})
File "/opt/openerp/server/openerp/addons/web/controllers/main.py", line 1122, in _call_kw
return getattr(req.session.model(model), method)(*args, **kwargs)
File "/opt/openerp/server/openerp/addons/web/session.py", line 42, in proxy
result = self.proxy.execute_kw(self.session._db, self.session._uid, self.session._password, self.model, method, args, kw)
File "/opt/openerp/server/openerp/addons/web/session.py", line 30, in proxy_method
result = self.session.send(self.service_name, method, *args)
File "/opt/openerp/server/openerp/addons/web/session.py", line 103, in send
raise xmlrpclib.Fault(openerp.tools.ustr(e), formatted_info)

Server Traceback (most recent call last):
File "/opt/openerp/server/openerp/addons/web/session.py", line 89, in send
return openerp.netsvc.dispatch_rpc(service_name, method, args)
File "/opt/openerp/server/openerp/netsvc.py", line 292, in dispatch_rpc
result = ExportService.getService(service_name).dispatch(method, params)
File "/opt/openerp/server/openerp/service/web_services.py", line 626, in dispatch
res = fn(db, uid, *params)
File "/opt/openerp/server/openerp/osv/osv.py", line 188, in execute_kw
return self.execute(db, uid, obj, method, *args, **kw or {})
File "/opt/openerp/server/openerp/osv/osv.py", line 131, in wrapper
return f(self, dbname, *args, **kwargs)
File "/opt/openerp/server/openerp/osv/osv.py", line 197, in execute
res = self.execute_cr(cr, uid, obj, method, *args, **kw)
File "/opt/openerp/server/openerp/osv/osv.py", line 185, in execute_cr
return getattr(object, method)(cr, uid, *args, **kw)
File "/opt/openerp/server/openerp/addons/event/event.py", line 125, in button_confirm
self.check_registration_limits(cr, uid, ids, context=context)
File "/opt/openerp/server/openerp/addons/event_moodle/event_moodle.py", line 185, in check_registration_limits
response_courses = moodle_pool.create_moodle_courses(cr, uid, moodle_config_wiz_id, dic_courses, context=context)
File "/opt/openerp/server/openerp/addons/event_moodle/event_moodle.py", line 107, in create_moodle_courses
return sock.core_course_create_courses(courses)
File "/usr/lib/python2.7/xmlrpclib.py", line 1224, in __call__
return self.__send(self.__name, args)
File "/usr/lib/python2.7/xmlrpclib.py", line 1578, in __request
verbose=self.__verbose
File "/usr/lib/python2.7/xmlrpclib.py", line 1264, in request
return self.single_request(host, handler, request_body, verbose)
File "/usr/lib/python2.7/xmlrpclib.py", line 1297, in single_request
return self.parse_response(response)
File "/usr/lib/python2.7/xmlrpclib.py", line 1473, in parse_response
return u.close()
File "/usr/lib/python2.7/xmlrpclib.py", line 793, in close
raise Fault(**self._stack[0])
Fault:

Thanks for your help!