OSQA Google oauth2client problem

[Carsten Grzemba]

Hi

I try to setup login at OSQA (www.opencsw.org/communtity) with Google+ Id but 
without luck

This is the error:
/opt/csw/lib/python2.7/site-packages/oauth2client/client.py TIME: 2015-05-19 
10:37:56,250 MSG: client.py:step2_exchange:2001 Failed to retrieve access 
token: {
 "error" : "redirect_uri_mismatch"
}

Is there anyone how knows where ist the problem? How can I fix this?

Thanks
Carsten