hi,
I downloaded and installed the galaxy-central instance because I want to use toolshed. But I can't startup the instance, The following error occurred£º

Fetched http://eggs.galaxyproject.org/WebError/WebError-0.8a-py2.7.egg
Fetched http://eggs.galaxyproject.org/twill/twill-0.9-py2.7.egg
Fetch successful.
Traceback (most recent call last):
  File "/export/galaxy-central/lib/galaxy/webapps/galaxy/buildapp.py", line 38, in app_factory
    from galaxy.app import UniverseApplication
  File "/export/galaxy-central/lib/galaxy/app.py", line 21, in <module>
    from galaxy.queue_worker import GalaxyQueueWorker
  File "/export/galaxy-central/lib/galaxy/queue_worker.py", line 10, in <module>
    import galaxy.queues
  File "/export/galaxy-central/lib/galaxy/queues.py", line 17, in <module>
    from kombu import Exchange, Queue
  File "/export/galaxy-central/eggs/kombu-3.0.13-py2.7.egg/kombu/__init__.py", line 67, in __getattr__
    module = __import__(object_origins[name], None, None, [name])
  File "/export/galaxy-central/eggs/kombu-3.0.13-py2.7.egg/kombu/entity.py", line 10, in <module>
    from .abstract import MaybeChannelBound
  File "/export/galaxy-central/eggs/kombu-3.0.13-py2.7.egg/kombu/abstract.py", line 12, in <module>
    from .connection import maybe_channel
  File "/export/galaxy-central/eggs/kombu-3.0.13-py2.7.egg/kombu/connection.py", line 24, in <module>
    from kombu import exceptions
  File "/export/galaxy-central/eggs/kombu-3.0.13-py2.7.egg/kombu/exceptions.py", line 12, in <module>
    from amqp import ChannelError, ConnectionError, ResourceError
  File "/export/galaxy-central/eggs/amqp-1.4.5-py2.7.egg/amqp/__init__.py", line 32, in <module>
    from .basic_message import Message      # noqa
  File "/export/galaxy-central/eggs/amqp-1.4.5-py2.7.egg/amqp/basic_message.py", line 19, in <module>
    from .serialization import GenericContent
  File "/export/galaxy-central/eggs/amqp-1.4.5-py2.7.egg/amqp/serialization.py", line 33, in <module>
    from .five import int_types, long_t, string, string_t, items
  File "/export/galaxy-central/eggs/amqp-1.4.5-py2.7.egg/amqp/five.py", line 171, in <module>
    librt = ctypes.CDLL('librt.so.1', use_errno=True)
TypeError: __init__() got an unexpected keyword argument 'use_errno'

Why this happened?