/usr/bin/bluefish:11:g_type_check_instance_is_fundamentally_a:g_object_unref:dirmenu_idle_cleanup_lcb:g_main_dispatch:g_main_context_dispatch

The Ubuntu Error Tracker has been receiving reports about a problem regarding bluefish. This problem was most recently seen with package version 2.2.10-1, the problem page at https://errors.ubuntu.com/problem/deb51d888780fd4048979b4c7055e8d52d8750c0 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 and are a software developer, you can request it at http://forms.canonical.com/reports/.