Were you able to solve the problem @amarshall? I have the exact same error, 
do let me know please!

On Tuesday, March 31, 2015 at 8:04:23 PM UTC+5:30, Filipe Ximenes wrote:
>
> Thats strange.
> Are you using pip to install dependencies? Try uninstalling everything and 
> reinstalling again. 
> Make sure INSTALLED_APPS is not being defined somewhere else in the code. 
> Does the error persists if you set DEBUG = False locally?
>
> On Tue, Mar 31, 2015 at 10:21 AM, amarshall <adria...@gmail.com 
> <javascript:>> wrote:
>
>> Hi Filipe,
>>
>> I have few apps installed. When I comment out the tastypie line my app 
>> builds but gets an error in production because tastypie app isn't found. 
>> Here it is:
>>
>> INSTALLED_APPS = (
>>     'django.contrib.admin',
>>     'django.contrib.auth',
>>     'django.contrib.contenttypes',
>>     'django.contrib.sessions',
>>     'django.contrib.messages',
>>     'django.contrib.staticfiles',
>>     'rest_framework',
>>    # 'south',       // commented out after upgrade to Django 1.7
>>     'tastypie',
>>     'lokal',        #my app
>> )
>>
>>
>>
>> On Tuesday, March 31, 2015 at 5:52:55 AM UTC-4, Filipe Ximenes wrote:
>>>
>>> Can you show us your INSTALED_APPS?
>>> It may be the case you have a lot of apps installed and is not seeing a 
>>> duplicate reference to tastypie.
>>> On Mar 29, 2015 9:43 PM, "amarshall" <adria...@gmail.com> wrote:
>>>
>>>> Hi,
>>>>
>>>>  So I updated my django project from django 1.6 to 1.7.7 and when I run 
>>>> "python manage.py migrate" I get this error stating that I have a 
>>>> duplicate 
>>>> label. 
>>>>
>>>> Here's the traceback
>>>>
>>>>   Creating tables...
>>>>   Installing custom SQL...
>>>>   Installing indexes...
>>>> Running migrations:
>>>>   Applying tastypie.0001_initial...Traceback (most recent call last):
>>>>   File "manage.py", line 11, in <module>
>>>>     execute_from_command_line(sys.argv)
>>>>   File "/usr/local/lib/python2.7/dist-packages/django/core/
>>>> management/__init__.py", line 385, in execute_from_command_line
>>>>     utility.execute()
>>>>   File "/usr/local/lib/python2.7/dist-packages/django/core/
>>>> management/__init__.py", line 377, in execute
>>>>     self.fetch_command(subcommand).run_from_argv(self.argv)
>>>>   File "/usr/local/lib/python2.7/dist-packages/django/core/
>>>> management/base.py", line 288, in run_from_argv
>>>>     self.execute(*args, **options.__dict__)
>>>>   File "/usr/local/lib/python2.7/dist-packages/django/core/
>>>> management/base.py", line 338, in execute
>>>>     output = self.handle(*args, **options)
>>>>   File "/usr/local/lib/python2.7/dist-packages/django/core/
>>>> management/commands/migrate.py", line 161, in handle
>>>>     executor.migrate(targets, plan, fake=options.get("fake", False))
>>>>   File "/usr/local/lib/python2.7/dist-packages/django/db/
>>>> migrations/executor.py", line 68, in migrate
>>>>     self.apply_migration(migration, fake=fake)
>>>>   File "/usr/local/lib/python2.7/dist-packages/django/db/
>>>> migrations/executor.py", line 96, in apply_migration
>>>>     if self.detect_soft_applied(migration):
>>>>   File "/usr/local/lib/python2.7/dist-packages/django/db/
>>>> migrations/executor.py", line 140, in detect_soft_applied
>>>>     apps = project_state.render()
>>>>   File "/usr/local/lib/python2.7/dist-packages/django/db/
>>>> migrations/state.py", line 57, in render
>>>>     self.apps = Apps([AppConfigStub(label) for label in 
>>>> sorted(self.real_apps 
>>>> + list(app_labels))])
>>>>   File "/usr/local/lib/python2.7/dist-packages/django/apps/registry.py"
>>>> , line 56, in __init__
>>>>     self.populate(installed_apps)
>>>>   File "/usr/local/lib/python2.7/dist-packages/django/apps/registry.py"
>>>> , line 89, in populate
>>>>     "duplicates: %s" % app_config.label)
>>>> django.core.exceptions.ImproperlyConfigured: Application labels aren't 
>>>> unique, duplicates: tastypie
>>>>
>>>>
>>>> Not sure what to do here. I remove tastypie from the list of 
>>>> INSTALLED_APPS in my settings and everything works fine. but I do need it. 
>>>> Any suggestions ?
>>>>
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>
>
>
> -- 
>   
>
> *Filipe Ximenes*+55 (81) 8245-9204
>
> *Vinta Software Studio*http://www.vinta.com.br
>  

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