crash on adding bookmark

[bk138]

Thread 1 "multivnc" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff2c93d40 (LWP 9714)]
0x00007ffff7c8f94a in wxItemContainer::AssignNewItemClientData(unsigned int, void**, unsigned int, wxClientDataType) () from /usr/lib/x86_64-linux-gnu/libwx_gtk2u_core-3.0.so.0
(gdb) bt
#0  0x00007ffff7c8f94a in wxItemContainer::AssignNewItemClientData(unsigned int, void**, unsigned int, wxClientDataType) () at /usr/lib/x86_64-linux-gnu/libwx_gtk2u_core-3.0.so.0
#1  0x00007ffff7c8fad1 in wxItemContainer::DoInsertItemsInLoop(wxArrayStringsAdapter const&, unsigned int, void**, wxClientDataType) ()
    at /usr/lib/x86_64-linux-gnu/libwx_gtk2u_core-3.0.so.0
#2  0x00007ffff7c3106e in wxListBox::DoInsertItems(wxArrayStringsAdapter const&, unsigned int, void**, wxClientDataType) () at /usr/lib/x86_64-linux-gnu/libwx_gtk2u_core-3.0.so.0
#3  0x00005555555b45c1 in wxItemContainer::AppendItems(wxArrayStringsAdapter const&, void**, wxClientDataType) ()
#4  0x00005555555b4692 in wxItemContainer::AppendItems(wxArrayStringsAdapter const&, void**) ()
#5  0x00005555555b470c in wxItemContainer::Append(wxArrayString const&, void**) ()
#6  0x00005555555b4779 in wxItemContainer::Set(wxArrayString const&, void**) ()
#7  0x00005555555a83dd in MyFrameMain::loadbookmarks() ()
#8  0x00005555555adbbd in MyFrameMain::bookmarks_add(wxCommandEvent&) ()
#9  0x00007ffff78607ae in wxEvtHandler::ProcessEventIfMatchesId(wxEventTableEntryBase const&, wxEvtHandler*, wxEvent&) () at /usr/lib/x86_64-linux-gnu/libwx_baseu-3.0.so.0
#10 0x00007ffff78608b3 in wxEventHashTable::HandleEvent(wxEvent&, wxEvtHandler*) () at /usr/lib/x86_64-linux-gnu/libwx_baseu-3.0.so.0
#11 0x00007ffff7860bec in wxEvtHandler::TryHereOnly(wxEvent&) () at /usr/lib/x86_64-linux-gnu/libwx_baseu-3.0.so.0
#12 0x00007ffff7860c73 in wxEvtHandler::ProcessEventLocally(wxEvent&) () at /usr/lib/x86_64-linux-gnu/libwx_baseu-3.0.so.0
#13 0x00007ffff7860d11 in wxEvtHandler::ProcessEvent(wxEvent&) () at /usr/lib/x86_64-linux-gnu/libwx_baseu-3.0.so.0
#14 0x00007ffff7d843cb in wxWindowBase::TryAfter(wxEvent&) () at /usr/lib/x86_64-linux-gnu/libwx_gtk2u_core-3.0.so.0
#15 0x00007ffff7860ab7 in wxEvtHandler::SafelyProcessEvent(wxEvent&) () at /usr/lib/x86_64-linux-gnu/libwx_baseu-3.0.so.0
#16 0x00007ffff7d3b9f5 in wxMenuBase::SendEvent(int, int) () at /usr/lib/x86_64-linux-gnu/libwx_gtk2u_core-3.0.so.0
#17 0x00007ffff7c3aabb in  () at /usr/lib/x86_64-linux-gnu/libwx_gtk2u_core-3.0.so.0
#18 0x00007ffff72a3c8d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#19 0x00007ffff72b7365 in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#20 0x00007ffff72c02be in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#21 0x00007ffff72c097f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#22 0x00007ffff6c22a4a in gtk_widget_activate () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#23 0x00007ffff6b1f4bd in gtk_menu_shell_activate_item () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#24 0x00007ffff6b1f78e in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#25 0x00007ffff6b0d1eb in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#26 0x00007ffff72a3c8d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#27 0x00007ffff72b6bbd in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#28 0x00007ffff72bf9ab in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#29 0x00007ffff72c097f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#30 0x00007ffff6c23cac in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#31 0x00007ffff6b0b48c in gtk_propagate_event () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#32 0x00007ffff6b0b87b in gtk_main_do_event () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#33 0x00007ffff6e7ebac in  () at /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
#34 0x00007ffff7337f2e in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007ffff73381c8 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007ffff73384c2 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007ffff6b0a8e7 in gtk_main () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#38 0x00007ffff7bbc845 in wxGUIEventLoop::DoRun() () at /usr/lib/x86_64-linux-gnu/libwx_gtk2u_core-3.0.so.0
#39 0x00007ffff773648d in wxEventLoopBase::Run() () at /usr/lib/x86_64-linux-gnu/libwx_baseu-3.0.so.0
#40 0x00007ffff76ff616 in wxAppConsoleBase::MainLoop() () at /usr/lib/x86_64-linux-gnu/libwx_baseu-3.0.so.0
#41 0x00007ffff7780cf9 in wxEntry(int&, wchar_t**) () at /usr/lib/x86_64-linux-gnu/libwx_baseu-3.0.so.0
#42 0x00005555555872a2 in main ()