I was attempting to launch Polari and it would not. I launched from CLI and see
the following.
roger@HomoDevil:~> polari
/home/roger/.local/share/TpLogger/logs/idle_irc_Abhish0/chatrooms/#suse/20150301.log:103:
parser error : Couldn't find end of Start Tag messag line 103
<messag
       ^
/home/roger/.local/share/TpLogger/logs/idle_irc_Abhish0/chatrooms/#suse/20150301.log:103:
parser error : Premature end of data in tag log line 3
<messag
       ^

(org.gnome.Polari:2768): tp-logger-WARNING **: Failed to parse
file:'/home/roger/.local/share/TpLogger/logs/idle_irc_Abhish0/chatrooms/#suse/20150301.log'
Segmentation fault

I suspect this was caused by a hard shutdown. I removed the offending log and
Polari is back to normal.