Crash still here with the vcs plugin uninstalled: 

Reading symbols from thunar...Reading symbols from /usr/lib/debug/.build-id/7e/32b458faa818dfd7b90e73b285432feeed12c8.debug...done.
done.
(gdb) run
Starting program: /usr/bin/thunar 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffedaec700 (LWP 20973)]
[New Thread 0x7fffed2eb700 (LWP 20974)]
[New Thread 0x7fffe4f82700 (LWP 20976)]

(thunar:20969): GLib-CRITICAL **: Source ID 175 was not found when attempting to remove it

(thunar:20969): Gdk-CRITICAL **: IA__gdk_window_get_window_type: assertion 'GDK_IS_WINDOW (window)' failed

(thunar:20969): GLib-CRITICAL **: Source ID 315 was not found when attempting to remove it

Program received signal SIGSEGV, Segmentation fault.
__memmove_ssse3_back () at ../sysdeps/x86_64/multiarch/memcpy-ssse3-back.S:1544
1544	../sysdeps/x86_64/multiarch/memcpy-ssse3-back.S: No such file or directory.
(gdb) bt
#0  __memmove_ssse3_back () at ../sysdeps/x86_64/multiarch/memcpy-ssse3-back.S:1544
#1  0x00007ffff544941d in memmove (__len=<optimized out>, __src=<optimized out>, 
    __dest=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/string3.h:57
#2  delete (start=start@entry=0, len=len@entry=218, real=<optimized out>, real=<optimized out>)
    at ../../dbus/dbus-string.c:1183
#3  0x00007ffff5449d00 in delete (real=real@entry=0x555555849738, 
    real=real@entry=0x555555849738, len=len@entry=218, start=start@entry=0)
    at ../../dbus/dbus-string.c:1201
#4  _dbus_string_delete (str=str@entry=0x555555849738, start=start@entry=0, len=len@entry=218)
    at ../../dbus/dbus-string.c:1208
#5  0x00007ffff543c68d in load_message (body_len=82, header_len=136, 
    fields_array_len=<optimized out>, byte_order=108, message=0x5555561d6460, 
    loader=0x555555849730) at ../../dbus/dbus-message.c:4178
#6  _dbus_message_loader_queue_messages (loader=0x555555849730)
    at ../../dbus/dbus-message.c:4252
#7  0x00007ffff5444520 in _dbus_transport_get_dispatch_status (
    transport=transport@entry=0x5555558495a0) at ../../dbus/dbus-transport.c:1101
#8  0x00007ffff5444653 in _dbus_transport_queue_messages (transport=0x5555558495a0)
    at ../../dbus/dbus-transport.c:1128
---Type <return> to continue, or q <return> to quit---
#9  0x00007ffff542d539 in _dbus_connection_get_dispatch_status_unlocked (
    connection=0x555555849c20) at ../../dbus/dbus-connection.c:4238
#10 0x00007ffff542df86 in dbus_connection_get_dispatch_status (connection=0x555555849c20)
    at ../../dbus/dbus-connection.c:4369
#11 0x00007ffff5671cc3 in message_queue_prepare (source=<optimized out>, 
    timeout=timeout@entry=0x7fffffffdcb4) at dbus-gmain.c:71
#12 0x00007ffff4b9e68d in g_main_context_prepare (context=context@entry=0x5555558472f0, 
    priority=priority@entry=0x7fffffffdd38) at /build/buildd/glib2.0-2.40.2/./glib/gmain.c:3352
#13 0x00007ffff4b9ef03 in g_main_context_iterate (context=0x5555558472f0, block=block@entry=1, 
    dispatch=dispatch@entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.40.2/./glib/gmain.c:3714
#14 0x00007ffff4b9f30a in g_main_loop_run (loop=0x5555560efb00)
    at /build/buildd/glib2.0-2.40.2/./glib/gmain.c:3928
#15 0x00007ffff6a28417 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#16 0x0000555555577809 in main (argc=1, argv=0x7fffffffdf48) at main.c:310