[Thread debugging using libthread_db enabled]
[New Thread 0x7fffe1006700 (LWP 20988)]

(thunar:20985): GLib-GIO-CRITICAL **: g_content_type_get_description: assertion `type != NULL' failed

(thunar:20985): GLib-GIO-CRITICAL **: g_content_type_get_description: assertion `type != NULL' failed
a: NULL!
b: NULL!

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff443d069 in strcasecmp_l () from /lib/libc.so.6
#0  0x00007ffff443d069 in strcasecmp_l () from /lib/libc.so.6
#1  0x00000000004397ca in sort_by_type (a=0xf9c8c0, b=0xf9c920, case_sensitive=0) at thunar-list-model.c:1653
#2  0x00000000004390e6 in thunar_list_model_cmp (store=0xf05890, a=0xf9c8c0, b=0xf9c920) at thunar-list-model.c:1021
#3  0x00000000004393ab in thunar_list_model_files_added (folder=<value optimized out>, files=0xbea320, store=0xf05890) at thunar-list-model.c:1278
#4  0x00007ffff4c16ebe in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#5  0x00007ffff4c28807 in ?? () from /usr/lib/libgobject-2.0.so.0
#6  0x00007ffff4c31c45 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#7  0x00007ffff4c31e13 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#8  0x00000000004302d7 in thunar_folder_finished (job=<value optimized out>, folder=0xfc7f70) at thunar-folder.c:435
#9  0x00007ffff4c16ebe in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#10 0x00007ffff4c28807 in ?? () from /usr/lib/libgobject-2.0.so.0
#11 0x00007ffff4c31c45 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#12 0x00007ffff4c31e13 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#13 0x00007ffff79c26ce in ?? () from /usr/lib/libexo-1.so.0
#14 0x00007ffff4eb6ea9 in ?? () from /usr/lib/libgio-2.0.so.0
#15 0x00007ffff475fbf3 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#16 0x00007ffff47603d0 in ?? () from /usr/lib/libglib-2.0.so.0
#17 0x00007ffff4760a42 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#18 0x00007ffff671d917 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#19 0x000000000041eedc in main (argc=1, argv=0x7fffffffdef8) at main.c:294