Probleme runserver

C:\Documents and Settings\jesslallly\Bureau\Jess\Django\trunk\miraemos> python m
anage.py runserver
Traceback (most recent call last):
  File "manage.py", line 11, in <module>
    execute_manager(settings)
  File "C:\Python26\lib\site-packages\django\core\management\__init__.py", line
340, in execute_manager
    utility.execute()
  File "C:\Python26\lib\site-packages\django\core\management\__init__.py", line
295, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "C:\Python26\lib\site-packages\django\core\management\base.py", line 195,
 in run_from_argv
    self.execute(*args, **options.__dict__)
  File "C:\Python26\lib\site-packages\django\core\management\base.py", line 213,
 in execute
    translation.activate('en-us')
  File "C:\Python26\lib\site-packages\django\utils\translation\__init__.py", lin
e 73, in activate
    return real_activate(language)
  File "C:\Python26\lib\site-packages\django\utils\translation\__init__.py", lin
e 43, in delayed_loader
    return g['real_%s' % caller](*args, **kwargs)
  File "C:\Python26\lib\site-packages\django\utils\translation\trans_real.py", l
ine 209, in activate
    _active[currentThread()] = translation(language)
  File "C:\Python26\lib\site-packages\django\utils\translation\trans_real.py", l
ine 198, in translation
    default_translation = _fetch(settings.LANGUAGE_CODE)
  File "C:\Python26\lib\site-packages\django\utils\translation\trans_real.py", l
ine 181, in _fetch
    app = getattr(__import__(appname[:p], {}, {}, [appname[p+1:]]), appname[p+1:
])
  File "C:\Python26\lib\site-packages\django\contrib\admin\__init__.py", line 1,
 in <module>
    from django.contrib.admin.options import ModelAdmin, HORIZONTAL, VERTICAL
  File "C:\Python26\lib\site-packages\django\contrib\admin\options.py", line 5,
in <module>
    from django.contrib.contenttypes.models import ContentType
  File "C:\Python26\lib\site-packages\django\contrib\contenttypes\models.py", li
ne 1, in <module>
    from django.db import models
  File "C:\Python26\lib\site-packages\django\db\models\__init__.py", line 10, in
 <module>
    from django.db.models.fields.files import FileField, ImageField
  File "C:\Python26\lib\site-packages\django\db\models\fields\files.py", line 7,
 in <module>
    from django.core.files.storage import default_storage
  File "C:\Python26\lib\site-packages\django\core\files\storage.py", line 231, i
n <module>
    default_storage = DefaultStorage()
  File "C:\Python26\lib\site-packages\django\core\files\storage.py", line 125, i
n __init__
    self.location = os.path.abspath(location)
  File "C:\Python26\lib\ntpath.py", line 458, in abspath
    path = _getfullpathname(path)
TypeError: coercing to Unicode: need string or buffer, tuple found