_cff_backend load error on runtime

mgundes@win7 /c/work/python/PiyasaTakip/ClientFX/winBuild/DestekMenkulPiyasaTakip$ ./DestekMenkulPT.exe
2015-12-03 18:56:45,976 INFO > <string>: ========================PROGRAM START========================
2015-12-03 18:56:45,976 INFO > <string>: Parsing ConfigFile
2015-12-03 18:56:46,016 INFO > <string>: ClientFx version: 2.021.055, confVersion: 2.021.055
2015-12-03 18:56:46,086 INFO > <string>: Initialize register
2015-12-03 18:56:46,088 INFO > <string>: Parsing Content HTML Files
2015-12-03 18:56:46,088 INFO > <string>: Parsing LinkConfigFile
2015-12-03 18:56:46,088 INFO > <string>: Parse SettingsFile
2015-12-03 18:56:46,134 DEBUG > Json2Item: simplejson imported
Traceback (most recent call last):
  File "<string>", line 88, in <module>
  File "<string>", line 41, in runApplication
  File "c:\program files (x86)\python27\lib\site-packages\PyInstaller-3.0-py2.7.egg\PyInstaller\loader\pyimod03_importers.py", line 363, in load_module
    exec(bytecode, module.__dict__)
  File "C:\work\python\PiyasaTakip\ClientFX\src\ProviderFactory.py", line 2, in <module>
    from CometNewsProvider import CometNewsProvider
  File "c:\program files (x86)\python27\lib\site-packages\PyInstaller-3.0-py2.7.egg\PyInstaller\loader\pyimod03_importers.py", line 363, in load_module
    exec(bytecode, module.__dict__)
  File "C:\work\python\PiyasaTakip\ClientFX\src\CometNewsProvider.py", line 7, in <module>
    from NewsLib.NewsCometConn import NewsCometConn
  File "c:\program files (x86)\python27\lib\site-packages\PyInstaller-3.0-py2.7.egg\PyInstaller\loader\pyimod03_importers.py", line 363, in load_module
    exec(bytecode, module.__dict__)
  File "C:\work\python\DstkFramework\NewsLib\NewsCometConn.py", line 4, in <module>
    from WebComet.CometConn import CometConn
  File "c:\program files (x86)\python27\lib\site-packages\PyInstaller-3.0-py2.7.egg\PyInstaller\loader\pyimod03_importers.py", line 363, in load_module
    exec(bytecode, module.__dict__)
  File "C:\work\python\DstkFramework\WebComet\CometConn.py", line 22, in <module>
    from twisted.internet.ssl import ClientContextFactory
  File "c:\program files (x86)\python27\lib\site-packages\PyInstaller-3.0-py2.7.egg\PyInstaller\loader\pyimod03_importers.py", line 363, in load_module
    exec(bytecode, module.__dict__)
  File "C:\Program Files (x86)\Python27\lib\site-packages\twisted\internet\ssl.py", line 59, in <module>
    from OpenSSL import SSL
  File "c:\program files (x86)\python27\lib\site-packages\PyInstaller-3.0-py2.7.egg\PyInstaller\loader\pyimod03_importers.py", line 363, in load_module
    exec(bytecode, module.__dict__)
  File "C:\Program Files (x86)\Python27\lib\site-packages\OpenSSL\__init__.py", line 8, in <module>
    from OpenSSL import rand, crypto, SSL
  File "c:\program files (x86)\python27\lib\site-packages\PyInstaller-3.0-py2.7.egg\PyInstaller\loader\pyimod03_importers.py", line 363, in load_module
    exec(bytecode, module.__dict__)
  File "C:\Program Files (x86)\Python27\lib\site-packages\OpenSSL\rand.py", line 11, in <module>
    from OpenSSL._util import (
  File "c:\program files (x86)\python27\lib\site-packages\PyInstaller-3.0-py2.7.egg\PyInstaller\loader\pyimod03_importers.py", line 363, in load_module
    exec(bytecode, module.__dict__)
  File "C:\Program Files (x86)\Python27\lib\site-packages\OpenSSL\_util.py", line 6, in <module>
    from cryptography.hazmat.bindings.openssl.binding import Binding
  File "c:\program files (x86)\python27\lib\site-packages\PyInstaller-3.0-py2.7.egg\PyInstaller\loader\pyimod03_importers.py", line 363, in load_module
    exec(bytecode, module.__dict__)
  File "C:\Program Files (x86)\Python27\lib\site-packages\cryptography\hazmat\bindings\openssl\binding.py", line 13, in <module>
    from cryptography.hazmat.bindings._openssl import ffi, lib
  File "c:\program files (x86)\python27\lib\site-packages\PyInstaller-3.0-py2.7.egg\PyInstaller\loader\pyimod03_importers.py", line 517, in load_module
    module = imp.load_module(fullname, fp, filename, ext_tuple)
ImportError: No module named _cffi_backend