Fedora fresh install

Pitivi installed using Add/Remove Software GUI

can't launch pitivi.

Trying from console, error:

pitivi
Traceback (most recent call last):
  File "/usr/bin/pitivi", line 118, in <module>
    _run_pitivi()
  File "/usr/bin/pitivi", line 111, in _run_pitivi
    import pitivi.application as ptv
  File "/usr/share/pitivi/python/pitivi/application.py", line 46, in <module>
    from pitivi.pluginmanager import PluginManager
  File "/usr/share/pitivi/python/pitivi/pluginmanager.py", line 36, in <module>
    import pkg_resources
ImportError: No module named pkg_resources


Thx for your help