> /Users/csanchez/Documents/workspace/nti.dataserver-buildout/eggs/gunicorn-19.5.0-py2.7.egg/gunicorn/sock.py(179)create_sockets()
    177     # check ssl config early to raise the error on startup
    178     # only the certfile is needed since it can contains the keyfile
--> 179     if conf.certfile and not os.path.exists(conf.certfile):
    180         raise ValueError('certfile "%s" does not exist' % conf.certfile)
    181 

ipdb> conf.address
[('', 8081), '/Users/csanchez/Documents/workspace/nti.dataserver-buildout/var/dataserver.sock']

> /Users/csanchez/Documents/workspace/nti.dataserver-buildout/eggs/gunicorn-19.5.0-py2.7.egg/gunicorn/sock.py(227)create_sockets()
    225         for i in range(5):
    226             try:
--> 227                 sock = sock_type(addr, conf, log)
    228             except socket.error as e:
    229                 if e.args[0] == errno.EADDRINUSE:
	
	
> /Users/csanchez/Documents/workspace/nti.dataserver-buildout/eggs/gunicorn-19.5.0-py2.7.egg/gunicorn/sock.py(102)__init__()
	100         if fd is None:
	101             try:
--> 102                 st = os.stat(addr)
	103             except OSError as e:
	104                 if e.args[0] != errno.ENOENT:

	ipdb> n
> /Users/csanchez/Documents/workspace/nti.dataserver-buildout/eggs/gunicorn-19.5.0-py2.7.egg/gunicorn/sock.py(107)__init__()
	105                     raise
	106             else:
--> 107                 if stat.S_ISSOCK(st.st_mode):
	108                     os.remove(addr)
	109                 else:

> /Users/csanchez/Documents/workspace/nti.dataserver-buildout/eggs/gunicorn-19.5.0-py2.7.egg/gunicorn/sock.py(108)__init__()
	106             else:
	107                 if stat.S_ISSOCK(st.st_mode):
--> 108                     os.remove(addr)
	109                 else:
	110                     raise ValueError("%r is not a socket" % addr)
		
/Users/csanchez/Documents/workspace/nti.dataserver-buildout/eggs/gunicorn-19.5.0-py2.7.egg/gunicorn/sock.py(112)__init__()
	110                     raise ValueError("%r is not a socket" % addr)
	111         self.parent = os.getpid()
--> 112         super(UnixSocket, self).__init__(addr, conf, log, fd=fd)
	113         # each arbiter grabs a shared lock on the unix socket.
	114         fcntl.lockf(self.sock, fcntl.LOCK_SH | fcntl.LOCK_NB)
			
IOError: (9, 'Bad file descriptor')