OSError: dlopen(libSystem.dylib, 6): image not found

Question

Just updated my Mac to El Capitan 10.11. I am trying to run Django 1.6 with Celery 3.1 and I'm getting this error now:

Unhandled exception in thread started by <function wrapper at 0x10f861050>
Traceback (most recent call last):
  File "/Library/Python/2.7/site-packages/django/utils/autoreload.py", line 93, in wrapper
    fn(*args, **kwargs)
  File "/Library/Python/2.7/site-packages/django/core/management/commands/runserver.py", line 101, in inner_run
    self.validate(display_num_errors=True)
  File "/Library/Python/2.7/site-packages/django/core/management/base.py", line 310, in validate
    num_errors = get_validation_errors(s, app)
  File "/Library/Python/2.7/site-packages/django/core/management/validation.py", line 34, in get_validation_errors
    for (app_name, error) in get_app_errors().items():
  File "/Library/Python/2.7/site-packages/django/db/models/loading.py", line 196, in get_app_errors
    self._populate()
  File "/Library/Python/2.7/site-packages/django/db/models/loading.py", line 75, in _populate
    self.load_app(app_name, True)
  File "/Library/Python/2.7/site-packages/django/db/models/loading.py", line 99, in load_app
    models = import_module('%s.models' % app_name)
  File "/Library/Python/2.7/site-packages/django/utils/importlib.py", line 40, in import_module
    __import__(name)
  File "/Library/Python/2.7/site-packages/debug_toolbar/models.py", line 9, in <module>
    dt_settings.patch_all()
  File "/Library/Python/2.7/site-packages/debug_toolbar/settings.py", line 215, in patch_all
    patch_root_urlconf()
  File "/Library/Python/2.7/site-packages/debug_toolbar/settings.py", line 203, in patch_root_urlconf
    reverse('djdt:render_panel')
  File "/Library/Python/2.7/site-packages/django/core/urlresolvers.py", line 503, in reverse
    app_list = resolver.app_dict[ns]
  File "/Library/Python/2.7/site-packages/django/core/urlresolvers.py", line 329, in app_dict
    self._populate()
  File "/Library/Python/2.7/site-packages/django/core/urlresolvers.py", line 267, in _populate
    for pattern in reversed(self.url_patterns):
  File "/Library/Python/2.7/site-packages/django/core/urlresolvers.py", line 365, in url_patterns
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
  File "/Library/Python/2.7/site-packages/django/core/urlresolvers.py", line 360, in urlconf_module
    self._urlconf_module = import_module(self.urlconf_name)
  File "/Library/Python/2.7/site-packages/django/utils/importlib.py", line 40, in import_module
    __import__(name)
  File "/Users/pedrotorres/Documents/work/projects/bparts/netpecasv2/urls.py", line 10, in <module>
    url(r'', include('Common.urls')),
  File "/Library/Python/2.7/site-packages/django/conf/urls/__init__.py", line 26, in include
    urlconf_module = import_module(urlconf_module)
  File "/Library/Python/2.7/site-packages/django/utils/importlib.py", line 40, in import_module
    __import__(name)
  File "/Users/pedrotorres/Documents/work/projects/bparts/Common/urls.py", line 3, in <module>
    from APIMobile.views import request_product_info_by_qrcode
  File "/Users/pedrotorres/Documents/work/projects/bparts/APIMobile/views.py", line 9, in <module>
    from Common.views import resizeImage, token_generator, getWatermarkImage, filterProductsByBrandModelVersionYear, \
  File "/Users/pedrotorres/Documents/work/projects/bparts/Common/views.py", line 34, in <module>
    from Common.tasks import turn_off_demo_mode_new_workshop
  File "/Users/pedrotorres/Documents/work/projects/bparts/Common/tasks.py", line 3, in <module>
    from netpecasv2.celeryapp import app
  File "/Users/pedrotorres/Documents/work/projects/bparts/netpecasv2/celeryapp.py", line 5, in <module>
    from celery import Celery
  File "/Library/Python/2.7/site-packages/celery/__init__.py", line 130, in <module>
    from celery import five
  File "/Library/Python/2.7/site-packages/celery/five.py", line 51, in <module>
    from kombu.five import monotonic
  File "/Library/Python/2.7/site-packages/kombu/five.py", line 52, in <module>
    libSystem = ctypes.CDLL('libSystem.dylib')
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ctypes/__init__.py", line 365, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: dlopen(libSystem.dylib, 6): image not found

Everything worked fine before. Can't find a solution to fix this. I've seen this thread but doesn't work: "OSError: dlopen(libSystem.dylib, 6): image not found" (OS X + macports + Celery 3.1.7)

I didn't have any DYLD_FALLBACK_LIBRARY_PATH before. I tried to:

export DYLD_FALLBACK_LIBRARY_PATH="/usr/lib":$DYLD_FALLBACK_LIBRARY_PATH

but Python can't find the Library despite it being located under "/usr/lib"

Anyone has had a problem like this?

Answer 1

I suspect (but can't confirm) the System Integrity Protection (SIP) of OSX El Capitan is preventing access to your /usr/lib folder.

It would be extreme and defeating the purpose of the security feature, but you could try disabling SIP by booting into the OS X Recovery partition, executing csrutil disable and rebooting...atleast until another option / work-around can be found.

ArsTechnica has a write-up here: http://arstechnica.com/apple/2015/09/os-x-10-11-el-capitan-the-ars-technica-review/9/

And a similar issue is described here: http://blog.honekamp.net/blog/2015/09/07/el-cap-and-my-printer/

More discussion on Hacker News here: https://news.ycombinator.com/item?id=10309576

Answer 2

pip install --upgrade billiard
pip install --upgrade celery
pip install --upgrade kombu
pip install --upgrade amqp

This should work.