#0  0x00007f81f0c33846 in gtk_rc_clear_realized_style (key=0xeb3890, value=<optimized out>, data=<optimized out>) at /build/gtk+2.0-tESQz7/gtk+2.0-2.24.29/gtk/gtkrc.c:1665
  [Error: gtkrc.c was not found in source tree]
#1  0x00007f81ef3862d0 in g_hash_table_foreach () from /tmp/apport_sandbox_VNBVJu/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f81f0c35dcb in IA__gtk_rc_reset_styles (settings=0xd72980) at /build/gtk+2.0-tESQz7/gtk+2.0-2.24.29/gtk/gtkrc.c:1711
  [Error: gtkrc.c was not found in source tree]
#3  0x00007f81ef66dfa5 in g_closure_invoke () from /tmp/apport_sandbox_VNBVJu/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#4  0x00007f81ef67fff1 in signal_emit_unlocked_R () from /tmp/apport_sandbox_VNBVJu/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#5  0x00007f81ef688d8c in g_signal_emit_valist () from /tmp/apport_sandbox_VNBVJu/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#6  0x00007f81ef6890bf in g_signal_emit () from /tmp/apport_sandbox_VNBVJu/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#7  0x00007f81ef6724d4 in g_object_dispatch_properties_changed () from /tmp/apport_sandbox_VNBVJu/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#8  0x00007f81ef674961 in g_object_notify () from /tmp/apport_sandbox_VNBVJu/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#9  0x00007f81f0c56701 in apply_queued_setting (data=0xd72980, pspec=0xd92710, qvalue=0x7f81d8011590) at /build/gtk+2.0-tESQz7/gtk+2.0-2.24.29/gtk/gtksettings.c:1530
  [Error: gtksettings.c was not found in source tree]
#10 0x00007f81f0c37335 in gtk_rc_parse_statement (scanner=0xd99f50, context=0xdac000) at /build/gtk+2.0-tESQz7/gtk+2.0-2.24.29/gtk/gtkrc.c:2966
  [Error: gtkrc.c was not found in source tree]
#11 gtk_rc_parse_any (context=context@entry=0xdac000, input_name=input_name@entry=0xf75e30 "/usr/share/themes/Ambiant-MATE/gtk-2.0/gtkrc", input_fd=input_fd@entry=14, input_string=input_string@entry=0x0) at /build/gtk+2.0-tESQz7/gtk+2.0-2.24.29/gtk/gtkrc.c:2275
  [Error: gtkrc.c was not found in source tree]
#12 0x00007f81f0c388e5 in gtk_rc_context_parse_one_file (context=context@entry=0xdac000, filename=filename@entry=0xf75e30 "/usr/share/themes/Ambiant-MATE/gtk-2.0/gtkrc", priority=priority@entry=10, reload=reload@entry=0) at /build/gtk+2.0-tESQz7/gtk+2.0-2.24.29/gtk/gtkrc.c:1033
  [Error: gtkrc.c was not found in source tree]
#13 0x00007f81f0c38ac4 in gtk_rc_context_parse_file (context=context@entry=0xdac000, filename=filename@entry=0xf75e30 "/usr/share/themes/Ambiant-MATE/gtk-2.0/gtkrc", priority=priority@entry=10, reload=reload@entry=0) at /build/gtk+2.0-tESQz7/gtk+2.0-2.24.29/gtk/gtkrc.c:1099
  [Error: gtkrc.c was not found in source tree]
#14 0x00007f81f0c38d03 in gtk_rc_parse_named (context=0xdac000, name=0xdad630 "Ambiant-MATE", type=<optimized out>) at /build/gtk+2.0-tESQz7/gtk+2.0-2.24.29/gtk/gtkrc.c:847
  [Error: gtkrc.c was not found in source tree]
#15 0x00007f81f0c394c9 in IA__gtk_rc_reparse_all_for_settings (settings=settings@entry=0xd72980, force_load=force_load@entry=1) at /build/gtk+2.0-tESQz7/gtk+2.0-2.24.29/gtk/gtkrc.c:1833
  [Error: gtkrc.c was not found in source tree]
#16 0x00007f81f0c395e8 in gtk_rc_settings_changed (settings=0xd72980, pspec=<optimized out>, context=0xdac000) at /build/gtk+2.0-tESQz7/gtk+2.0-2.24.29/gtk/gtkrc.c:656
  [Error: gtkrc.c was not found in source tree]
#17 0x00007f81ef66dfa5 in g_closure_invoke () from /tmp/apport_sandbox_VNBVJu/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#18 0x00007f81ef67fff1 in signal_emit_unlocked_R () from /tmp/apport_sandbox_VNBVJu/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#19 0x00007f81ef688d8c in g_signal_emit_valist () from /tmp/apport_sandbox_VNBVJu/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#20 0x00007f81ef6890bf in g_signal_emit () from /tmp/apport_sandbox_VNBVJu/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#21 0x00007f81ef6724d4 in g_object_dispatch_properties_changed () from /tmp/apport_sandbox_VNBVJu/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#22 0x00007f81ef674961 in g_object_notify () from /tmp/apport_sandbox_VNBVJu/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#23 0x00007f81f0c59655 in _gtk_settings_handle_event (event=<optimized out>) at /build/gtk+2.0-tESQz7/gtk+2.0-2.24.29/gtk/gtksettings.c:2162
  [Error: gtksettings.c was not found in source tree]
#24 0x00007f81f0bed6c5 in IA__gtk_main_do_event (event=0xf4c470) at /build/gtk+2.0-tESQz7/gtk+2.0-2.24.29/gtk/gtkmain.c:1525
  [Error: gtkmain.c was not found in source tree]
#25 0x00007f81f0861c4c in gdk_event_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at /build/gtk+2.0-tESQz7/gtk+2.0-2.24.29/gdk/x11/gdkevents-x11.c:2425
  [Error: gdkevents-x11.c was not found in source tree]
#26 0x00007f81ef397147 in g_main_context_dispatch () from /tmp/apport_sandbox_VNBVJu/lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f81ef3973a0 in g_main_context_iterate.isra () from /tmp/apport_sandbox_VNBVJu/lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f81ef3976c2 in g_main_loop_run () from /tmp/apport_sandbox_VNBVJu/lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007f81f0bec657 in IA__gtk_main () at /build/gtk+2.0-tESQz7/gtk+2.0-2.24.29/gtk/gtkmain.c:1282
  [Error: gtkmain.c was not found in source tree]
#30 0x00000000004224cc in main ()