I can reproduce on master and on 2.3.x.

To reproduce:

1. download the attached 3 documents and put them in the same directory.
2. open master_copy_from.lyx in one LyX instance
3. in the dialog that comes up, click "cancel"
4. open master_copy_to.lyx in a *separate* LyX instance
5. highlight the child inset in master_copy_from.lyx and do ctrl+c to copy.
6. go to the other LyX instance, highlight the child inset there, and do
   ctrl+v to paste.

I think it's important that question1.lyx's master document (the one in
question1.lyx's document settings) does not exist. I don't think it's
important that child.lyx (which is included in master_copy_from.lyx)
does not exist.

I get a SIGSEGV with the attached backtrace (from master).

Can anyone reproduce?

Scott

Thread 1 "lyx" received signal SIGSEGV, Segmentation fault.
0x0000000000d701f9 in lyx::RowPainter::paintInset (this=0x7fffffff5d20, e=...)
    at /home/scott/lyxbuilds/master/repo/src/RowPainter.cpp:108
108             pi_.base.font = e.inset->inheritFont() ? e.font.fontInfo() :
(gdb) bt
#0  0x0000000000d701f9 in lyx::RowPainter::paintInset (this=0x7fffffff5d20, 
e=...) at /home/scott/lyxbuilds/master/repo/src/RowPainter.cpp:108
#1  0x0000000000d7308b in lyx::RowPainter::paintText (this=0x7fffffff5d20) at 
/home/scott/lyxbuilds/master/repo/src/RowPainter.cpp:574
#2  0x0000000000f424da in lyx::TextMetrics::drawParagraph (this=0x3117838, 
pi=..., pit=0, x=0, y=105) at 
/home/scott/lyxbuilds/master/repo/src/TextMetrics.cpp:1959
#3  0x0000000000f417c1 in lyx::TextMetrics::draw (this=0x3117838, pi=..., x=0, 
y=105) at /home/scott/lyxbuilds/master/repo/src/TextMetrics.cpp:1803
#4  0x0000000000e2c618 in lyx::BufferView::draw (this=0x304c080, pain=..., 
paint_caret=false) at /home/scott/lyxbuilds/master/repo/src/BufferView.cpp:3195
#5  0x000000000126f929 in lyx::frontend::GuiWorkArea::paintEvent 
(this=0x303e010, ev=0x7fffffff6530) at 
/home/scott/lyxbuilds/master/repo/src/frontends/qt4/GuiWorkArea.cpp:1262
#6  0x00007ffff6df116d in QWidget::event (this=this@entry=0x303e010, 
event=event@entry=0x7fffffff6530) at 
/usr/src/qt/qt5/qtbase/src/widgets/kernel/qwidget.cpp:8958
#7  0x00007ffff6eeac8b in QFrame::event (this=this@entry=0x303e010, 
e=e@entry=0x7fffffff6530) at 
/usr/src/qt/qt5/qtbase/src/widgets/widgets/qframe.cpp:550
#8  0x00007ffff6f77677 in QAbstractScrollArea::viewportEvent (this=0x303e010, 
e=0x7fffffff6530) at 
/usr/src/qt/qt5/qtbase/src/widgets/widgets/qabstractscrollarea.cpp:1206
#9  0x00007ffff6f7800d in QAbstractScrollAreaPrivate::viewportEvent 
(event=<optimized out>, this=<optimized out>) at 
/usr/src/qt/qt5/qtbase/src/widgets/widgets/qabstractscrollarea_p.h:112
#10 QAbstractScrollAreaFilter::eventFilter (this=<optimized out>, o=<optimized 
out>, e=<optimized out>) at 
/usr/src/qt/qt5/qtbase/src/widgets/widgets/qabstractscrollarea_p.h:128
#11 0x00007ffff6419b86 in 
QCoreApplicationPrivate::sendThroughObjectEventFilters 
(receiver=receiver@entry=0x303ddc0, event=event@entry=0x7fffffff6530)
    at /usr/src/qt/qt5/qtbase/src/corelib/kernel/qcoreapplication.cpp:1129
#12 0x00007ffff6da8a55 in QApplicationPrivate::notify_helper 
(this=this@entry=0x2056180, receiver=receiver@entry=0x303ddc0, 
e=e@entry=0x7fffffff6530)
    at /usr/src/qt/qt5/qtbase/src/widgets/kernel/qapplication.cpp:3715
#13 0x00007ffff6db2546 in QApplication::notify (this=0x2057d30, 
receiver=0x303ddc0, e=0x7fffffff6530) at 
/usr/src/qt/qt5/qtbase/src/widgets/kernel/qapplication.cpp:3682
#14 0x0000000001238ee0 in lyx::frontend::GuiApplication::notify 
(this=0x2057d30, receiver=0x303ddc0, event=0x7fffffff6530) at 
/home/scott/lyxbuilds/master/repo/src/frontends/qt4/GuiApplication.cpp:2710
#15 0x00007ffff6419d80 in QCoreApplication::notifyInternal2 
(receiver=receiver@entry=0x303ddc0, event=event@entry=0x7fffffff6530) at 
/usr/src/qt/qt5/qtbase/src/corelib/kernel/qcoreapplication.cpp:1018
#16 0x00007ffff6de96da in QCoreApplication::sendSpontaneousEvent 
(event=0x7fffffff6530, receiver=<optimized out>)
    at 
../../include/QtCore/../../../../../src/qt/qt5/qtbase/src/corelib/kernel/qcoreapplication.h:236
#17 QWidgetPrivate::sendPaintEvent (this=this@entry=0x303e320, toBePainted=...) 
at /usr/src/qt/qt5/qtbase/src/widgets/kernel/qwidget.cpp:5712
#18 0x00007ffff6dea177 in QWidgetPrivate::drawWidget 
(this=this@entry=0x303e320, pdev=<optimized out>, rgn=..., offset=..., 
flags=flags@entry=36, sharedPainter=sharedPainter@entry=0x0, 
backingStore=0x2865320)
    at /usr/src/qt/qt5/qtbase/src/widgets/kernel/qwidget.cpp:5652
#19 0x00007ffff6dba3c1 in QWidgetBackingStore::doSync 
(this=this@entry=0x2865320) at 
/usr/src/qt/qt5/qtbase/src/widgets/kernel/qwidgetbackingstore.cpp:1371
#20 0x00007ffff6dba8c8 in QWidgetBackingStore::sync (this=0x2865320) at 
/usr/src/qt/qt5/qtbase/src/widgets/kernel/qwidgetbackingstore.cpp:1158
#21 0x00007ffff6dd7b06 in QWidgetPrivate::syncBackingStore 
(this=this@entry=0x273cb90) at 
/usr/src/qt/qt5/qtbase/src/widgets/kernel/qwidget.cpp:1971
#22 0x00007ffff6df16ce in QWidget::event (this=this@entry=0x2504d70, 
event=event@entry=0x2be8e00) at 
/usr/src/qt/qt5/qtbase/src/widgets/kernel/qwidget.cpp:9122
#23 0x00007ffff6efb7c9 in QMainWindow::event (this=0x2504d70, event=0x2be8e00) 
at /usr/src/qt/qt5/qtbase/src/widgets/widgets/qmainwindow.cpp:1557
#24 0x000000000129394c in lyx::frontend::GuiView::event (this=0x2504d70, 
e=0x2be8e00) at 
/home/scott/lyxbuilds/master/repo/src/frontends/qt4/GuiView.cpp:1381
#25 0x00007ffff6da8a68 in QApplicationPrivate::notify_helper 
(this=this@entry=0x2056180, receiver=receiver@entry=0x2504d70, 
e=e@entry=0x2be8e00)
    at /usr/src/qt/qt5/qtbase/src/widgets/kernel/qapplication.cpp:3719
#26 0x00007ffff6db2546 in QApplication::notify (this=0x2057d30, 
receiver=0x2504d70, e=0x2be8e00) at 
/usr/src/qt/qt5/qtbase/src/widgets/kernel/qapplication.cpp:3682
#27 0x0000000001238ee0 in lyx::frontend::GuiApplication::notify 
(this=0x2057d30, receiver=0x2504d70, event=0x2be8e00) at 
/home/scott/lyxbuilds/master/repo/src/frontends/qt4/GuiApplication.cpp:2710
#28 0x00007ffff6419d80 in QCoreApplication::notifyInternal2 
(receiver=receiver@entry=0x2504d70, event=event@entry=0x2be8e00) at 
/usr/src/qt/qt5/qtbase/src/corelib/kernel/qcoreapplication.cpp:1018
#29 0x00007ffff641f1dd in QCoreApplication::sendEvent (event=0x2be8e00, 
receiver=0x2504d70) at 
../../include/QtCore/../../../../../src/qt/qt5/qtbase/src/corelib/kernel/qcoreapplication.h:233
#30 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, 
event_type=event_type@entry=0, data=0x2024d00) at 
/usr/src/qt/qt5/qtbase/src/corelib/kernel/qcoreapplication.cpp:1678
#31 0x00007ffff641f5c6 in QCoreApplication::sendPostedEvents 
(receiver=receiver@entry=0x0, event_type=event_type@entry=0) at 
/usr/src/qt/qt5/qtbase/src/corelib/kernel/qcoreapplication.cpp:1532
#32 0x00007ffff64752a0 in postEventSourceDispatch (s=0x22326e0) at 
/usr/src/qt/qt5/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:276
#33 0x00007ffff4a3a197 in g_main_context_dispatch () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007ffff4a3a3f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007ffff4a3a49c in g_main_context_iteration () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007ffff6474baf in QEventDispatcherGlib::processEvents (this=0x218add0, 
flags=...) at 
/usr/src/qt/qt5/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:423
#37 0x00007ffff7ed3a70 in QPAEventDispatcherGlib::processEvents 
(this=<optimized out>, flags=...) at 
/usr/src/qt/qt5/qtbase/src/platformsupport/eventdispatchers/qeventdispatcher_glib.cpp:122
#38 0x00007ffff6417aed in QEventLoop::processEvents 
(this=this@entry=0x7fffffff71a0, flags=..., flags@entry=...) at 
/usr/src/qt/qt5/qtbase/src/corelib/kernel/qeventloop.cpp:134
#39 0x00007ffff6417f66 in QEventLoop::exec (this=this@entry=0x7fffffff71a0, 
flags=flags@entry=...) at 
/usr/src/qt/qt5/qtbase/src/corelib/kernel/qeventloop.cpp:212
#40 0x00007ffff6fd325a in QDialog::exec (this=0x7fffffff72f0) at 
/usr/src/qt/qt5/qtbase/src/widgets/dialogs/qdialog.cpp:539
#41 0x000000000120b0ac in lyx::frontend::Alert::doPrompt (title0=L"Create new 
document?", 
    question=L"The document 
/home/scott/Dropbox/Inbox/lyx_mwe_sigsegv/doesNotExist.lyx does not yet 
exist.\n\nDo you want to create a new document?", default_button=0, 
cancel_button=1, b1=L"&Create", 
    b2=L"Cancel", b3=L"", b4=L"") at 
/home/scott/lyxbuilds/master/repo/src/frontends/qt4/GuiAlert.cpp:127
char_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&, 
std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&, 
std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&)>::__call<int, , 0ul, 1ul, 2ul, 3ul, 4ul, 5ul, 
6ul, 7ul>(std::tuple<>&&, std::_Index_tuple<0ul, 1ul, 2ul, 3ul, 4ul, 5ul, 6ul, 
7ul>) (this=0x312a390, __args=<unknown type in 
/home/scott/lyxbuilds/master/CMakeBuild/bin/lyx, CU 0x32e2b93, DIE 0x332fe52>)
    at /usr/include/c++/5/functional:1074
#43 0x0000000001210ab9 in std::_Bind<int 
(*(std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<int>, std::reference_wrapper<int>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > 
const>))(std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&, int, int, 
std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&, 
std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)>::operator()<, 
int>() (this=0x312a390)
    at /usr/include/c++/5/functional:1133
#44 0x0000000001210219 in std::_Function_handler<int (), std::_Bind<int 
(*(std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<int>, std::reference_wrapper<int>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > 
const>))(std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&, int, int, 
std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&, 
std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)> 
>::_M_invoke(std::_Any_data const&) (__functor=...) at 
/usr/include/c++/5/functional:1857
#45 0x0000000001211e0e in std::function<int ()>::operator()() const 
(this=0x7fffffff7708) at /usr/include/c++/5/functional:2267
#46 0x0000000001211d9c in 
lyx::frontend::InGuiThread<int>::synchronousFunctionCall (this=0x7fffffff76e0) 
at /home/scott/lyxbuilds/master/repo/src/frontends/qt4/InGuiThread.h:105
#47 0x0000000001249021 in lyx::frontend::IntoGuiThreadMover::callInGuiThread 
(this=0x7fffffff76e0) at 
/home/scott/lyxbuilds/master/repo/src/frontends/qt4/InGuiThread.cpp:36
#48 0x000000000120db59 in lyx::frontend::InGuiThread<int>::call<std::_Bind<int 
(*(std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<int>, std::reference_wrapper<int>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > 
const>))(std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&, int, int, 
std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&, 
std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)> >(std::_Bind<int 
(*(std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<int>, std::reference_wrapper<int>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const>, 
std::reference_wrapper<std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > 
const>))(std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&, int, int, 
std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&, 
std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)>) 
(this=0x7fffffff76e0, f=...) at 
/home/scott/lyxbuilds/master/repo/src/frontends/qt4/InGuiThread.h:62
#49 0x000000000120ce51 in lyx::frontend::InGuiThread<int>::call<int 
(*)(std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&, int, int, 
std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&, 
std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&), 
std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const, int, int, 
std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const, 
std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const> (
    this=0x7fffffff76e0, 
    f=0x120aaaf 
<lyx::frontend::Alert::doPrompt(std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&, 
std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&, int, int, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&, 
std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&, std::__cxx11::basic_string<wchar_t, 
std::char_traits<wchar_t>, std::allocator<wchar_t> > const&, 
std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, 
std::allocator<wchar_t> > const&)>, p1=L"Create new document?", p2=L"The 
document /home/scott/Dropbox/Inbox/lyx_mwe_sigsegv/doesNotExist.lyx does not 
yet exist.\n\nDo you want to create a new document?", p3=@0x7fffffff76cc: 0, 
    p4=@0x7fffffff76c8: 1, p5=L"&Create", p6=L"Cancel", p7=L"", p8=L"") at 
/home/scott/lyxbuilds/master/repo/src/frontends/qt4/InGuiThread.h:98
#50 0x000000000120b2f2 in lyx::frontend::Alert::prompt (title0=L"Create new 
document?", 
    question=L"The document 
/home/scott/Dropbox/Inbox/lyx_mwe_sigsegv/doesNotExist.lyx does not yet 
exist.\n\nDo you want to create a new document?", default_button=0, 
cancel_button=1, b1=L"&Create", 
    b2=L"Cancel", b3=L"", b4=L"") at 
/home/scott/lyxbuilds/master/repo/src/frontends/qt4/GuiAlert.cpp:151
#51 0x0000000000e3e255 in lyx::checkAndLoadLyXFile (filename=..., 
acceptDirty=true) at /home/scott/lyxbuilds/master/repo/src/buffer_funcs.cpp:128
#52 0x0000000000e783ff in lyx::Buffer::readDocument (this=0x2ed6300, lex=...) 
at /home/scott/lyxbuilds/master/repo/src/Buffer.cpp:1022
#53 0x0000000000e7979e in lyx::Buffer::readFile (this=0x2ed6300, fn=...) at 
/home/scott/lyxbuilds/master/repo/src/Buffer.cpp:1179
#54 0x0000000000e79707 in lyx::Buffer::readFile (this=0x2ed6300, fn=...) at 
/home/scott/lyxbuilds/master/repo/src/Buffer.cpp:1167
#55 0x0000000000e94235 in lyx::Buffer::loadThisLyXFile (this=0x2ed6300, fn=...) 
at /home/scott/lyxbuilds/master/repo/src/Buffer.cpp:4683
#56 0x0000000000e9420f in lyx::Buffer::loadLyXFile (this=0x2ed6300) at 
/home/scott/lyxbuilds/master/repo/src/Buffer.cpp:4677
#57 0x000000000117930b in lyx::InsetInclude::loadIfNeeded (this=0x30d1ba0) at 
/home/scott/lyxbuilds/master/repo/src/insets/InsetInclude.cpp:458
#58 0x0000000001176df5 in lyx::InsetInclude::InsetInclude (this=0x30d1ba0, 
buf=0x7fffffff9160, p=...) at 
/home/scott/lyxbuilds/master/repo/src/insets/InsetInclude.cpp:182
#59 0x0000000000fa9e5d in lyx::readInset (lex=..., buf=0x7fffffff9160) at 
/home/scott/lyxbuilds/master/repo/src/factory.cpp:559
#60 0x0000000000d035f8 in lyx::Text::readParToken (this=0x31595e8, par=..., 
lex=..., token="\\begin_inset", font=..., change=..., errorList=...) at 
/home/scott/lyxbuilds/master/repo/src/Text.cpp:414
#61 0x0000000000d055f5 in lyx::Text::readParagraph (this=0x31595e8, par=..., 
lex=..., errorList=...) at /home/scott/lyxbuilds/master/repo/src/Text.cpp:568
#62 0x0000000000d0b6e7 in lyx::Text::read (this=0x31595e8, lex=..., 
errorList=..., insetPtr=0x31595d0) at 
/home/scott/lyxbuilds/master/repo/src/Text.cpp:1864
#63 0x0000000000e786ea in lyx::Buffer::readDocument (this=0x7fffffff9160, 
lex=...) at /home/scott/lyxbuilds/master/repo/src/Buffer.cpp:1055
#64 0x0000000000e79333 in lyx::Buffer::readString (this=0x7fffffff9160, 
    s="#LyX 2.4 created this file. For more info see 
https://www.lyx.org/\n\\lyxformat 
550\n\\begin_document\n\\begin_header\n\\save_transient_properties 
true\n\\origin unavailable\n\\textclass article\n\\use_default_opti"...) at 
/home/scott/lyxbuilds/master/repo/src/Buffer.cpp:1140
#65 0x0000000000dbb7ca in lyx::cap::pasteClipboardText (cur=..., errorList=..., 
asParagraphs=true, type=lyx::frontend::Clipboard::AnyTextType) at 
/home/scott/lyxbuilds/master/repo/src/CutAndPaste.cpp:1208
#66 0x0000000000c9e293 in lyx::Text::dispatch (this=0x305a158, cur=..., 
cmd=...) at /home/scott/lyxbuilds/master/repo/src/Text3.cpp:1423
#67 0x00000000010d3d63 in lyx::InsetText::doDispatch (this=0x305a140, cur=..., 
cmd=...) at /home/scott/lyxbuilds/master/repo/src/insets/InsetText.cpp:309
#68 0x0000000001121af6 in lyx::Inset::dispatch (this=0x305a140, cur=..., 
cmd=...) at /home/scott/lyxbuilds/master/repo/src/insets/Inset.cpp:325
#69 0x0000000000f24e08 in lyx::Cursor::dispatch (this=0x304c5a8, cmd0=...) at 
/home/scott/lyxbuilds/master/repo/src/Cursor.cpp:780
#70 0x00000000012a579d in lyx::frontend::GuiView::dispatchToBufferView 
(this=0x2504d70, cmd=..., dr=...) at 
/home/scott/lyxbuilds/master/repo/src/frontends/qt4/GuiView.cpp:3682
#71 0x00000000012a9d5e in lyx::frontend::GuiView::dispatch (this=0x2504d70, 
cmd=..., dr=...) at 
/home/scott/lyxbuilds/master/repo/src/frontends/qt4/GuiView.cpp:4345
#72 0x0000000001234c5f in lyx::frontend::GuiApplication::dispatch 
(this=0x2057d30, cmd=..., dr=...) at 
/home/scott/lyxbuilds/master/repo/src/frontends/qt4/GuiApplication.cpp:2074
#73 0x00000000012309ec in lyx::frontend::GuiApplication::dispatch 
(this=0x2057d30, cmd=...) at 
/home/scott/lyxbuilds/master/repo/src/frontends/qt4/GuiApplication.cpp:1410
#74 0x0000000000d1aac7 in lyx::dispatch (action=...) at 
/home/scott/lyxbuilds/master/repo/src/LyX.cpp:1468
#75 0x0000000001236c70 in lyx::frontend::GuiApplication::processFuncRequest 
(this=0x2057d30, func=...) at 
/home/scott/lyxbuilds/master/repo/src/frontends/qt4/GuiApplication.cpp:2273
#76 0x0000000001236abd in lyx::frontend::GuiApplication::processKeySym 
(this=0x2057d30, keysym=..., state=lyx::ControlModifier) at 
/home/scott/lyxbuilds/master/repo/src/frontends/qt4/GuiApplication.cpp:2267
#77 0x000000000126c51d in lyx::frontend::GuiWorkArea::processKeySym 
(this=0x303e010, key=..., mod=lyx::ControlModifier) at 
/home/scott/lyxbuilds/master/repo/src/frontends/qt4/GuiWorkArea.cpp:517
#78 0x0000000001274abf in lyx::frontend::GuiWorkArea::qt_static_metacall 
(_o=0x303e010, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0x7fffffffd020)
    at 
/home/scott/lyxbuilds/master/CMakeBuild/src/frontends/qt4/moc_GuiWorkArea.cpp:126
#79 0x00007ffff6449fb1 in QMetaObject::activate (sender=sender@entry=0x304bb50, 
signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, 
argv=argv@entry=0x7fffffffd020)
    at /usr/src/qt/qt5/qtbase/src/corelib/kernel/qobject.cpp:3766
#80 0x00007ffff644a2e9 in QMetaObject::activate (sender=0x304bb50, m=<optimized 
out>, local_signal_index=0, argv=0x7fffffffd020) at 
/usr/src/qt/qt5/qtbase/src/corelib/kernel/qobject.cpp:3628
#81 0x00000000012752f7 in lyx::frontend::CompressorProxy::signal 
(this=0x304bb50, _t1=..., _t2=lyx::ControlModifier) at 
/home/scott/lyxbuilds/master/CMakeBuild/src/frontends/qt4/moc_GuiWorkArea.cpp:364
#82 0x000000000126ea19 in lyx::frontend::CompressorProxy::slot (this=0x304bb50, 
sym=..., mod=lyx::ControlModifier, isAutoRepeat=false) at 
/home/scott/lyxbuilds/master/repo/src/frontends/qt4/GuiWorkArea.cpp:1065
#83 0x00000000012750b6 in lyx::frontend::CompressorProxy::qt_static_metacall 
(_o=0x304bb50, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x2872180)
    at 
/home/scott/lyxbuilds/master/CMakeBuild/src/frontends/qt4/moc_GuiWorkArea.cpp:308
#84 0x00007ffff6445fc6 in QMetaCallEvent::placeMetaCall (this=0x2845380, 
object=0x304bb50) at /usr/src/qt/qt5/qtbase/src/corelib/kernel/qobject.cpp:503
#85 0x00007ffff644a77a in QObject::event (this=0x304bb50, e=<optimized out>) at 
/usr/src/qt/qt5/qtbase/src/corelib/kernel/qobject.cpp:1246
#86 0x00007ffff6da8a68 in QApplicationPrivate::notify_helper 
(this=this@entry=0x2056180, receiver=receiver@entry=0x304bb50, 
e=e@entry=0x2845380)
    at /usr/src/qt/qt5/qtbase/src/widgets/kernel/qapplication.cpp:3719
#87 0x00007ffff6db0678 in QApplication::notify (this=0x2057d30, 
receiver=0x304bb50, e=0x2845380) at 
/usr/src/qt/qt5/qtbase/src/widgets/kernel/qapplication.cpp:3091
#88 0x0000000001238ee0 in lyx::frontend::GuiApplication::notify 
(this=0x2057d30, receiver=0x304bb50, event=0x2845380) at 
/home/scott/lyxbuilds/master/repo/src/frontends/qt4/GuiApplication.cpp:2710
#89 0x00007ffff6419d80 in QCoreApplication::notifyInternal2 
(receiver=receiver@entry=0x304bb50, event=event@entry=0x2845380) at 
/usr/src/qt/qt5/qtbase/src/corelib/kernel/qcoreapplication.cpp:1018
#90 0x00007ffff641f1dd in QCoreApplication::sendEvent (event=0x2845380, 
receiver=0x304bb50) at 
../../include/QtCore/../../../../../src/qt/qt5/qtbase/src/corelib/kernel/qcoreapplication.h:233
#91 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, 
event_type=event_type@entry=0, data=0x2024d00) at 
/usr/src/qt/qt5/qtbase/src/corelib/kernel/qcoreapplication.cpp:1678
#92 0x00007ffff641f5c6 in QCoreApplication::sendPostedEvents 
(receiver=receiver@entry=0x0, event_type=event_type@entry=0) at 
/usr/src/qt/qt5/qtbase/src/corelib/kernel/qcoreapplication.cpp:1532
#93 0x00007ffff64752a0 in postEventSourceDispatch (s=0x22326e0) at 
/usr/src/qt/qt5/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:276
#94 0x00007ffff4a3a197 in g_main_context_dispatch () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#95 0x00007ffff4a3a3f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#96 0x00007ffff4a3a49c in g_main_context_iteration () from 
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#97 0x00007ffff6474baf in QEventDispatcherGlib::processEvents (this=0x218add0, 
flags=...) at 
/usr/src/qt/qt5/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:423
#98 0x00007ffff7ed3a70 in QPAEventDispatcherGlib::processEvents 
(this=<optimized out>, flags=...) at 
/usr/src/qt/qt5/qtbase/src/platformsupport/eventdispatchers/qeventdispatcher_glib.cpp:122
#99 0x00007ffff6417aed in QEventLoop::processEvents 
(this=this@entry=0x7fffffffd840, flags=..., flags@entry=...) at 
/usr/src/qt/qt5/qtbase/src/corelib/kernel/qeventloop.cpp:134
#100 0x00007ffff6417f66 in QEventLoop::exec (this=this@entry=0x7fffffffd840, 
flags=flags@entry=...) at 
/usr/src/qt/qt5/qtbase/src/corelib/kernel/qeventloop.cpp:212
#101 0x00007ffff64219b2 in QCoreApplication::exec () at 
/usr/src/qt/qt5/qtbase/src/corelib/kernel/qcoreapplication.cpp:1291
#102 0x00007ffff6817e3a in QGuiApplication::exec () at 
/usr/src/qt/qt5/qtbase/src/gui/kernel/qguiapplication.cpp:1679
#103 0x00007ffff6da8943 in QApplication::exec () at 
/usr/src/qt/qt5/qtbase/src/widgets/kernel/qapplication.cpp:2907
#104 0x0000000001237441 in lyx::frontend::GuiApplication::exec (this=0x2057d30) 
at /home/scott/lyxbuilds/master/repo/src/frontends/qt4/GuiApplication.cpp:2476
#105 0x0000000000d11dcd in lyx::LyX::exec (this=0x7fffffffda20, 
argc=@0x7fffffffda1c: 2, argv=0x7fffffffdb38) at 
/home/scott/lyxbuilds/master/repo/src/LyX.cpp:398
#106 0x0000000000dce6df in main (argc=2, argv=0x7fffffffdb38) at 
/home/scott/lyxbuilds/master/repo/src/main.cpp:42

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