/usr/bin/transmission-gtk:11:tr_sessionLock:removeTorrent:readFromPipe:event_process_active_single_queue:event_process_active

The Ubuntu Error Tracker has been receiving reports about a problem regarding transmission. This problem was most recently seen with package version 2.92-1ubuntu1, the problem page at https://errors.ubuntu.com/problem/e6b2782b68362bfd936cd3776feb97f6aef4532a contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports.
If you do not have access to the Ubuntu Error Tracker you can request it at http://forms.canonical.com/reports/.