(xfce4-screenshooter:7774): GLib-GObject-CRITICAL **: 23:50:51.207: g_object_set_qdata: assertion 'G_IS_OBJECT (object)' failed Thread 1 "xfce4-screensho" received signal SIGTRAP, Trace/breakpoint trap. 0x00007ffff6e559b6 in ?? () from /usr/lib/libglib-2.0.so.0 (gdb) bt #0 0x00007ffff6e559b6 in () at /usr/lib/libglib-2.0.so.0 #1 0x00007ffff6e56363 in g_logv () at /usr/lib/libglib-2.0.so.0 #2 0x00007ffff6e56560 in g_log () at /usr/lib/libglib-2.0.so.0 #3 0x00007ffff7a1d753 in () at /usr/lib/libgtk-3.so.0 #4 0x00007ffff7a3192b in () at /usr/lib/libgtk-3.so.0 #5 0x00007ffff6f4c315 in g_object_unref () at /usr/lib/libgobject-2.0.so.0 #6 0x0000555555563859 in screenshooter_imgur_dialog_finalize (object=0x55555576b6b0) at lib/screenshooter-imgur-dialog.c:82 #7 0x00007ffff6f4c385 in g_object_unref () at /usr/lib/libgobject-2.0.so.0 #8 0x00007ffff6f4e3d5 in g_closure_invoke () at /usr/lib/libgobject-2.0.so.0 #9 0x00007ffff6f3b195 in () at /usr/lib/libgobject-2.0.so.0 #10 0x00007ffff6f3f01e in g_signal_emit_valist () at /usr/lib/libgobject-2.0.so.0 #11 0x00007ffff7dfcfe7 in () at /usr/lib/libexo-2.so.0 #12 0x00007ffff705b50f in () at /usr/lib/libgio-2.0.so.0 #13 0x00007ffff6e66271 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0 #14 0x00007ffff6e67f89 in () at /usr/lib/libglib-2.0.so.0 #15 0x00007ffff6e68f62 in g_main_loop_run () at /usr/lib/libglib-2.0.so.0 #16 0x00007ffff78317cf in gtk_dialog_run () at /usr/lib/libgtk-3.so.0 #17 0x0000555555561d96 in screenshooter_upload_to_imgur (image_path=, title=) at lib/screenshooter-imgur.c:187 #18 0x000055555555cfec in action_idle (sd=0x555555590030) at lib/screenshooter-actions.c:112 #19 0x00007ffff6e66271 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0 #20 0x00007ffff6e67f89 in () at /usr/lib/libglib-2.0.so.0 #21 0x00007ffff6e68f62 in g_main_loop_run () at /usr/lib/libglib-2.0.so.0 #22 0x00007ffff78cd2af in gtk_main () at /usr/lib/libgtk-3.so.0 #23 0x000055555555cac4 in main (argc=, argv=) at src/main.c:340