Cant get it working on Django 1.7

[Caio Perdona]

When migrating, I get these:

Traceback (most recent call last):

  File "manage.py", line 10, in <module>

    execute_from_command_line(sys.argv)

  File "/Users/perdona/Dev/projects/python/.workon_home/enlist_seed_mapper/lib/python2.7/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line

    utility.execute()

  File "/Users/perdona/Dev/projects/python/.workon_home/enlist_seed_mapper/lib/python2.7/site-packages/django/core/management/__init__.py", line 377, in execute

    self.fetch_command(subcommand).run_from_argv(self.argv)

  File "/Users/perdona/Dev/projects/python/.workon_home/enlist_seed_mapper/lib/python2.7/site-packages/django/core/management/base.py", line 288, in run_from_argv

    self.execute(*args, **options.__dict__)

  File "/Users/perdona/Dev/projects/python/.workon_home/enlist_seed_mapper/lib/python2.7/site-packages/django/core/management/base.py", line 338, in execute

    output = self.handle(*args, **options)

  File "/Users/perdona/Dev/projects/python/.workon_home/enlist_seed_mapper/lib/python2.7/site-packages/django/core/management/commands/migrate.py", line 63, in handle

    executor = MigrationExecutor(connection, self.migration_progress_callback)

  File "/Users/perdona/Dev/projects/python/.workon_home/enlist_seed_mapper/lib/python2.7/site-packages/django/db/migrations/executor.py", line 17, in __init__

    self.loader = MigrationLoader(self.connection)

  File "/Users/perdona/Dev/projects/python/.workon_home/enlist_seed_mapper/lib/python2.7/site-packages/django/db/migrations/loader.py", line 48, in __init__

    self.build_graph()

  File "/Users/perdona/Dev/projects/python/.workon_home/enlist_seed_mapper/lib/python2.7/site-packages/django/db/migrations/loader.py", line 173, in build_graph

    self.load_disk()

  File "/Users/perdona/Dev/projects/python/.workon_home/enlist_seed_mapper/lib/python2.7/site-packages/django/db/migrations/loader.py", line 103, in load_disk

    migration_module = import_module("%s.%s" % (module_name, migration_name))

  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/importlib/__init__.py", line 37, in import_module

    __import__(name)

  File "/Users/perdona/Dev/projects/python/enlist_seed_mapper/filer/migrations_django/0001_initial.py", line 10, in <module>

    class Migration(migrations.Migration):

  File "/Users/perdona/Dev/projects/python/enlist_seed_mapper/filer/migrations_django/0001_initial.py", line 46, in Migration

    ('file', filer.fields.multistorage_file.MultiStorageFileField(max_length=255, upload_to=filer.fields.multistorage_file.generate_filename_multistorage, null=True, verbose_name='file', blank=True)),

  File "/Users/perdona/Dev/projects/python/enlist_seed_mapper/filer/fields/multistorage_file.py", line 104, in __init__

    kwargs.pop("to")

KeyError: 'to'

Has anyone experienced something like that?