(inkscape:25278): Gtk-CRITICAL **: IA__gtk_widget_get_visible: assertion `GTK_IS_WIDGET (widget)' failed
[Thread 0x7fffd7fff700 (LWP 25285) exited]
terminate called after throwing an instance of 'std::out_of_range'
  what():  vector::_M_range_check

Program received signal SIGABRT, Aborted.
0x00007fffeeb24475 in raise () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) bt
#0  0x00007fffeeb24475 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fffeeb276f0 in abort () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007fffef59589d in __gnu_cxx::__verbose_terminate_handler() () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#3  0x00007fffef593996 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007fffef5939c3 in std::terminate() () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#5  0x00007fffef593bee in __cxa_throw () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#6  0x00007fffef5e56fd in std::__throw_out_of_range(char const*) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#7  0x00000000009304d8 in _M_range_check (__n=<optimized out>, this=<optimized out>)
    at /usr/include/c++/4.7/bits/stl_vector.h:774
#8  at (__n=<optimized out>, this=<optimized out>) at /usr/include/c++/4.7/bits/stl_vector.h:792
#9  getGradientCoords (item=0x7fffd80422f0, point_type=<optimized out>, point_i=<optimized out>, 
    fill_or_stroke=<optimized out>) at gradient-chemistry.cpp:1298
#10 0x00000000004828cb in GrDragger::moveThisToDraggable (this=0x4acd990, item=0x7fffd80422f0, 
    point_type=point_type@entry=POINT_RG_MID2, point_i=1, fill_or_stroke=Inkscape::FOR_FILL, 
    write_repr=write_repr@entry=true) at gradient-drag.cpp:1481
#11 0x0000000000482d97 in GrDragger::moveOtherToDraggable (this=this@entry=0x4af3350, item=<optimized out>, 
    point_type=point_type@entry=POINT_RG_MID2, point_i=<optimized out>, fill_or_stroke=<optimized out>, 
    write_repr=write_repr@entry=true) at gradient-drag.cpp:1677
#12 0x000000000048305b in GrDragger::updateDependencies (this=this@entry=0x4af3350, write_repr=write_repr@entry=true)
    at gradient-drag.cpp:1572
#13 0x00000000004873f2 in gr_knot_ungrabbed_handler (knot=<optimized out>, state=<optimized out>, data=0x4af3350)
    at gradient-drag.cpp:1097
#14 0x00007fffefe3bc39 in g_cclosure_marshal_VOID(unsigned int0_t, void) ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#15 0x00007fffefe399a7 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#16 0x00007fffefe52006 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#17 0x00007fffefe52852 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#18 0x00000000004a3642 in sp_knot_handler (event=0x453e960, knot=0x5851900) at knot.cpp:357
#19 0x00000000006227c1 in sp_marshal_BOOLEAN__POINTER (closure=0x4ae2990, return_value=0x7fffffffd8a0, 
    n_param_values=<optimized out>, param_values=0x7fffffffd7d0, invocation_hint=<optimized out>, 
    marshal_data=<optimized out>) at helper/sp-marshal.cpp:124
#20 0x00007fffefe396e0 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#21 0x00007fffefe4a750 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#22 0x00007fffefe522db in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#23 0x00007fffefe52852 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#24 0x00000000005b0168 in SPCanvasImpl::emitEvent (canvas=canvas@entry=0x2f5b080, event=event@entry=0x44b36b0)
    at display/sp-canvas.cpp:1591
#25 0x00000000005b0499 in SPCanvasImpl::button (widget=<optimized out>, event=0x44b36b0) at display/sp-canvas.cpp:1785
#26 0x00007ffff5aec099 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#27 0x00007fffefe396e0 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#28 0x00007fffefe4a4d0 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#29 0x00007fffefe522db in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#30 0x00007fffefe52852 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#31 0x00007ffff5c0393e in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#32 0x00007ffff5aea434 in gtk_propagate_event () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#33 0x00007ffff5aea78b in gtk_main_do_event () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#34 0x00007ffff50bd7ac in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
#35 0x00007fffef881355 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007fffef881688 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007fffef881a82 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007ffff5ae9797 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#39 0x0000000000470d8b in sp_main_gui (argc=1, argv=0x7fffffffe548) at main.cpp:994
#40 0x00007fffeeb10ead in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#41 0x000000000046dfc1 in _start ()