Hello David, I fear that output is not sufficient for that type of application.
Maybe you could install following packages: thunar-dbgsym gdb libglib2.0-0-dbgsym libgtk-3-0-dbgsym For this you would need to add a matching package archive like described in this link: https://wiki.debian.org/HowToGetABacktrace#Installing_the_debugging_symbols And then running following command (all in one line) and trigger the crash again. This should generate a a file thunar-gdb_*.txt that could be forwarded to this bug. script -a "thunar-gdb_$(date +%Y-%m-%d_%H-%M-%S).txt" -c "thunar -q; gdb -q -ex 'set width 0' -ex 'set pagination off' -ex 'set backtrace past-main' -ex 'run' -ex 'backtrace no-filter' -ex 'print range_start' -ex 'print range_length' -ex 'print data_length' -ex 'print data_offset' -ex 'print mask_offset' -ex 'print i' -ex 'print j' -ex 'print/x cache' -ex 'print/x cache->buffer' -ex 'print/x data' -ex 'print/x offset' -ex 'print/x len' -ex 'info share' -ex 'info reg' -ex 'thread apply all bt full' -ex 'detach' -ex 'quit' --args thunar" Kind regards, Bernhard