Whenever I try and start friends-app, it crashes with the error:
friends-dispatcher crashed with ValueError in raw_decode(): No JSON object could be decoded
I've tried reinstalling but that didn't help. It works fine on another PC (logging in to the same Twitter account), also on 13.04.
The apport error lists the crash as a duplicate of https://bugs.launchpad.net/bugs/1166432, but that just 404s, so I don't know what the underlying issue is.
How do I fix the problem?
Edit: launching from a terminal gives me:
virtual void OnlineAccounts::Plugin::registerTypes(const char*) Ubuntu.OnlineAccounts 
virtual void FriendsPlugin::registerTypes(const char*) Friends 
QQmlComponent: Component is not ready
MODEL:  "com.canonical.Friends.Streams" 
account-service-model.cpp 266 update 
account-service-model.cpp 266 update 
Segmentation fault (core dumped)
 
    