Doesn't launch in Xenial 16.04: Error in sys.excepthook:

[pmo-19]

Nothing more than empty fields ...

$ vidcutter 
Error in sys.excepthook:

Original exception was:
$ 

What is going on ? This is my first install with the latest version 5.5.0
I have seen on another python project:

We have been able to get rid of these empty errors by closing sys.stderr and sys.stdout in ceph-deploy (see reference issue http://tracker.ceph.com/issues/7594 )

This is how we now call main():

#!python

if __name__ == '__main__':
    try:
        sys.exit(main())
    finally:
        # This block is crucial to avoid having issues with
        # Python spitting non-sense thread exceptions. We have already
        # handled what we could, so close stderr and stdout.
        if not os.environ.get('CEPH_DEPLOY_TEST'):
            try:
                sys.stdout.close()
            except:
                pass
            try:
                sys.stderr.close()
            except:
                pass