Comment 4 for bug 599504

Could you please generate an apport crash report for this? A crash report will help in resolving your problem.
You can enable apport for one instance like this in the terminal:
sudo service apport start force_start=1

I am marking this invalid as apport will open a new bug when the crash
is generated. Please include any relevant information from this report
in the new bug report. If you cannot generate a crash report, you can
reset the status of this one to new and we will try something else. Feel
free to subscribe me to the new bug report so I can assist you further.