/usr/lib/libreoffice/program/soffice.bin:11:com::sun::star::uno::BaseReference::iquery:com::sun::star::uno::Reference:com::sun::star::uno::Reference:cppu::OInterfaceContainerHelper::forEach:cppu::OInterfaceContainerHelper::notifyEach

The Ubuntu Error Tracker has been receiving reports about a problem regarding libreoffice. This problem was most recently seen with package version 1:5.1.4-0ubuntu1, the problem page at https://errors.ubuntu.com/problem/0bad2c6cf374385ea88426f19a37bf498872c0e7 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/.