Traceback (most recent call last): File "/home/axiacore/webapps/atlantis/lib/python2.5/django/core/handlers/base.py", line 83, in get_response request.path_info) File "/home/axiacore/webapps/atlantis/lib/python2.5/django/core/urlresolvers.py", line 186, in resolve sub_match = pattern.resolve(new_path) File "/home/axiacore/webapps/atlantis/lib/python2.5/django/core/urlresolvers.py", line 184, in resolve for pattern in self.url_patterns: File "/home/axiacore/webapps/atlantis/lib/python2.5/django/core/urlresolvers.py", line 208, in _get_url_patterns patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module) File "/home/axiacore/webapps/atlantis/lib/python2.5/django/core/urlresolvers.py", line 203, in _get_urlconf_module self._urlconf_module = import_module(self.urlconf_name) File "/home/axiacore/webapps/atlantis/lib/python2.5/django/utils/importlib.py", line 35, in import_module __import__(name) File "/home/axiacore/webapps/atlantis/atlantis/local_apps/facturacion/urls.py", line 16, in from atlantis.local_apps.facturacion.forms import PagoFacturaForm File "/home/axiacore/webapps/atlantis/atlantis/local_apps/facturacion/forms.py", line 5, in class FacturaForm(forms.ModelForm): File "/home/axiacore/webapps/atlantis/lib/python2.5/django/forms/models.py", line 201, in __new__ opts.exclude, formfield_callback) File "/home/axiacore/webapps/atlantis/lib/python2.5/django/forms/models.py", line 165, in fields_for_model formfield = formfield_callback(f) File "/home/axiacore/webapps/atlantis/lib/python2.5/django/forms/models.py", line 183, in lambda f: f.formfield()) File "/home/axiacore/webapps/atlantis/lib/python2.5/django/db/models/fields/related.py", line 727, in formfield 'queryset': self.rel.to._default_manager.complex_filter( AttributeError: 'str' object has no attribute '_default_manager' , POST:, COOKIES:{}, META:{'DOCUMENT_ROOT': '/etc/httpd/htdocs', 'GATEWAY_INTERFACE': 'CGI/1.1', 'HTTP_ACCEPT': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8', 'HTTP_ACCEPT_CHARSET': 'ISO-8859-1,utf-8;q=0.7,*;q=0.7', 'HTTP_ACCEPT_ENCODING': 'gzip,deflate', 'HTTP_ACCEPT_LANGUAGE': 'es-es,es;q=0.8,en-us;q=0.5,en;q=0.3', 'HTTP_CONNECTION': 'Keep-Alive', 'HTTP_HOST': 'XXXXXXXXXXXXXXXXXXXXX', 'HTTP_MAX_FORWARDS': '10', 'HTTP_USER_AGENT': 'Mozilla/5.0 (Windows; U; Windows NT 5.1; es-ES; rv:1.9.0.10) Gecko/2009042316 Firefox/3.0.10', 'HTTP_X_FORWARDED_FOR': 'XXXXXXXXXXXXXXXX', 'HTTP_X_FORWARDED_HOST': 'XXXXXXXXXXXXXXX', 'HTTP_X_FORWARDED_SERVER': 'XXXXXXXXXXXXXXX', 'PATH': '/usr/bin:/bin', 'PATH_INFO': u'/facturacion/agregar/', 'PATH_TRANSLATED': '/home/axiacore/webapps/atlantis/atlantis.wsgi/facturacion/agregar/', 'QUERY_STRING': '', 'REMOTE_ADDR': '127.0.0.1', 'REMOTE_PORT': '43409', 'REQUEST_METHOD': 'GET', 'REQUEST_URI': '/facturacion/agregar/', 'SCRIPT_FILENAME': '/home/axiacore/webapps/atlantis/atlantis.wsgi', 'SCRIPT_NAME': u'', 'SERVER_ADDR': '127.0.0.1', 'SERVER_ADMIN': '[no address given]', 'SERVER_NAME': 'XXXXXXXXXXXX', 'SERVER_PORT': '80', 'SERVER_PROTOCOL': 'HTTP/1.1', 'SERVER_SIGNATURE': '', 'SERVER_SOFTWARE': 'Apache/2.2.3 (CentOS) mod_wsgi/2.0 Python/2.5.1', 'mod_wsgi.application_group': 'web45.webfaction.com|', 'mod_wsgi.callable_object': 'application', 'mod_wsgi.listener_host': '', 'mod_wsgi.listener_port': '3260', 'mod_wsgi.process_group': '', 'mod_wsgi.reload_mechanism': '0', 'mod_wsgi.script_reloading': '1', 'wsgi.errors': , 'wsgi.file_wrapper': , 'wsgi.input': , 'wsgi.multiprocess': True, 'wsgi.multithread': False, 'wsgi.run_once': False, 'wsgi.url_scheme': 'http', 'wsgi.version': (1, 0)}>