requires_system_checks and requires_model_validation

[Pablo Flores]

I've uploaded from django 1.6 to django 1.7 and from python 3.2.3 to python 3.4.1.

Suddenly when I try to run the makemessages command to catch the translating messages I find this error:

django.core.exceptions.ImproperlyConfigured: Command Command defines both "requires_model_validation" and "requires_system_checks", which is illegal. Use only "requires_system_checks".

I've uploaded from django 1.6 to django 1.7 and from python 3.2.3 to python 3.4.1.

Suddenly when I try to run the makemessages command to catch the translating messages I find this error:

django.core.exceptions.ImproperlyConfigured: Command Command defines both "requires_model_validation" and "requires_system_checks", which is illegal. Use only "requires_system_checks".

I've googled it and I don't find where or what I should edit. In fact I've never used this parameter so...

Any idea?

The traceback

Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/home/pablo/Workspaces/milao/lib/python3.4/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line
utility.execute()
  File "/home/pablo/Workspaces/milao/lib/python3.4/site-packages/django/core/management/__init__.py", line 377, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/pablo/Workspaces/milao/lib/python3.4/site-packages/django/core/management/__init__.py", line 238, in fetch_command
klass = load_command_class(app_name, subcommand)
  File "/home/pablo/Workspaces/milao/lib/python3.4/site-packages/django/core/management/__init__.py", line 42, in load_command_class
return module.Command()
  File "/home/pablo/Workspaces/milao/lib/python3.4/site-packages/django/core/management/base.py", line 228, in __init__
'"requires_system_checks".' % self.__class__.__name__)
django.core.exceptions.ImproperlyConfigured: Command Command defines both "requires_model_validation" and "requires_system_checks", which is illegal. Use only "requires_system_checks".

[Tim Graham]

Maybe you are using a 3rd party package that needs to be updated?

This ticket tracker is for bugs and new features suggestions. Please see TicketClosingReasons/UseSupportChannels for ways to get help. You'll likely need to provide more information such as a way to reproduce your problem in order to get help.