DistributionNotFound while running after cx_freeze

[keelung]

i installed v1.6 by pip and django_downloadview directory was in my zip file generated by cx_freeze since i 'from django_downloadview import ObjectDownloadView' in my setup.py

DistributionNotFound at /diag/
django-downloadview
Request Method: GET
Request URL: http://127.0.0.1:8001/diag/
Django Version: 1.7c1
Exception Type: DistributionNotFound
Exception Value:
django-downloadview
Exception Location: D:\dev\Python\lib\site-packages\pkg_resources.py in resolve, line 639
Python Executable: D:\work\DPP\Scripts\Python\DiagnosticOnline\build\exe.win32-3.4\Feedback.exe
Python Version: 3.4.1
Python Path:
['D:\work\DPP\Scripts\Python\DiagnosticOnline\build\exe.win32-3.4\Feedback.exe',
'D:\work\DPP\Scripts\Python\DiagnosticOnline\build\exe.win32-3.4',
'D:\work\DPP\Scripts\Python\DiagnosticOnline\build\exe.win32-3.4\Feedback.zip',
'D:\work\DPP\Scripts\Python\DiagnosticOnline\build\exe.win32-3.4\library.zip',
'D:\work\DPP\Scripts\Python\DiagnosticOnline\build\exe.win32-3.4\Lib\site-packages\report_tools',
'D:\work\DPP\Scripts\Python\DiagnosticOnline\build\exe.win32-3.4\Lib\site-packages\djangobower']
Server time: Sun, 29 Jun 2014 06:04:21 +0800