After update python2.7-pyopenssl-0.13.1-1 to python2.7-pyopenssl-0.14-1 i have this error on opening deluge. Packpage downgrade solv problem. 
OS: Archlinux

/usr/lib/python2.7/site-packages/gtk-2.0/gtk/__init__.py:57: GtkWarning: could not open display
  warnings.warn(str(e), _gtk.Warning)
[ERROR   ] 22:19:53 ui:168 No module named cryptography.hazmat.bindings.openssl.binding
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/deluge/ui/ui.py", line 149, in __init__
    from deluge.ui.gtkui.gtkui import GtkUI
  File "/usr/lib/python2.7/site-packages/deluge/ui/gtkui/__init__.py", line 1, in <module>
    from gtkui import start
  File "/usr/lib/python2.7/site-packages/deluge/ui/gtkui/gtkui.py", line 75, in <module>
    from deluge.ui.client import client
  File "/usr/lib/python2.7/site-packages/deluge/ui/client.py", line 37, in <module>
    from twisted.internet import reactor, ssl, defer
  File "/usr/lib/python2.7/site-packages/twisted/internet/ssl.py", line 25, in <module>
    from OpenSSL import SSL
  File "/usr/lib/python2.7/site-packages/OpenSSL/__init__.py", line 8, in <module>
    from OpenSSL import rand, crypto, SSL
  File "/usr/lib/python2.7/site-packages/OpenSSL/rand.py", line 11, in <module>
    from OpenSSL._util import (
  File "/usr/lib/python2.7/site-packages/OpenSSL/_util.py", line 3, in <module>
    from cryptography.hazmat.bindings.openssl.binding import Binding
ImportError: No module named cryptography.hazmat.bindings.openssl.binding