Unable to authenticate using saved accounts, only freshly created ones

[ericgross]

Rather than repeating myself, here is a link to my question: http://stackoverflow.com/questions/24370996/how-can-i-use-saved-tokens-in-nxoauth2

Thanks a lot for this code, it is really helpful. If you would prefer that I put the question itself here as well, I am happy to do so.