Found another way to crash lyx:

Call utf8_to_ucs4 via getStatus and getPath,
but it is not obvious why it crashes here.
See attechments.

Peter
        LyX.exe!std::basic_string<unsigned int,std::char_traits<unsigned 
int>,std::allocator<unsigned int> >::_Eos(unsigned int _Newsize)  Zeile 1954   
C++
        LyX.exe!std::basic_string<unsigned int,std::char_traits<unsigned 
int>,std::allocator<unsigned int> >::append(unsigned int _Count, unsigned int 
_Ch)  Zeile 855  C++
        LyX.exe!std::basic_string<unsigned int,std::char_traits<unsigned 
int>,std::allocator<unsigned int> >::resize(unsigned int _Newsize, unsigned int 
_Ch)  Zeile 1532       C++
        LyX.exe!std::basic_string<unsigned int,std::char_traits<unsigned 
int>,std::allocator<unsigned int> >::resize(unsigned int _Newsize)  Zeile 1524 
C++
        LyX.exe!lyx::utf8_to_ucs4(const 
std::basic_string<char,std::char_traits<char>,std::allocator<char> > & utf8, 
std::basic_string<unsigned int,std::char_traits<unsigned 
int>,std::allocator<unsigned int> > & ucs4)  Zeile 83     C++
        LyX.exe!lyx::from_utf8(const 
std::basic_string<char,std::char_traits<char>,std::allocator<char> > & utf8)  
Zeile 100 + 0xd Bytes        C++
>       LyX.exe!lyx::frontend::GuiApplication::getStatus(const lyx::FuncRequest 
> & cmd)  Zeile 922 + 0x27 Bytes  C++
        LyX.exe!lyx::getStatus(const lyx::FuncRequest & action)  Zeile 1266 + 
0x1f Bytes        C++
        LyX.exe!lyx::frontend::Action::update()  Zeile 46 + 0x10 Bytes  C++
        LyX.exe!lyx::frontend::GuiToolbar::update(bool in_math, bool in_table, 
bool in_review, bool in_mathmacrotemplate)  Zeile 302 + 0x16 Bytes       C++
        LyX.exe!lyx::frontend::GuiView::updateToolbars()  Zeile 1402 + 0x2d 
Bytes       C++
        LyX.exe!lyx::frontend::GuiView::updateDialogs()  Zeile 3877     C++
        LyX.exe!lyx::frontend::GuiView::restartCursor()  Zeile 3679     C++
        LyX.exe!lyx::frontend::GuiApplication::dispatch(const lyx::FuncRequest 
& cmd)  Zeile 1136       C++
        LyX.exe!lyx::dispatch(const lyx::FuncRequest & action)  Zeile 1273 + 
0x1b Bytes C++
        LyX.exe!lyx::frontend::GuiApplication::processFuncRequest(const 
lyx::FuncRequest & func)  Zeile 1742 + 0x9 Bytes        C++
        LyX.exe!lyx::frontend::GuiApplication::processKeySym(const 
lyx::KeySymbol & keysym, lyx::KeyModifier state)  Zeile 1737 C++
        LyX.exe!lyx::frontend::GuiWorkArea::processKeySym(const lyx::KeySymbol 
& key, lyx::KeyModifier mod)  Zeile 490  C++
        LyX.exe!lyx::frontend::GuiWorkArea::keyPressEvent(QKeyEvent * ev)  
Zeile 1012   C++
        QtGuid4.dll!QWidget::event(QEvent * event)  Zeile 8263  C++
        QtGuid4.dll!QFrame::event(QEvent * e)  Zeile 557 + 0xc Bytes    C++
        QtGuid4.dll!QAbstractScrollArea::event(QEvent * e)  Zeile 996 + 0xc 
Bytes       C++
        LyX.exe!lyx::frontend::GuiWorkArea::event(QEvent * e)  Zeile 692 + 0xf 
Bytes    C++
        QtGuid4.dll!QApplicationPrivate::notify_helper(QObject * receiver, 
QEvent * e)  Zeile 4445 + 0x11 Bytes C++
        QtGuid4.dll!QApplication::notify(QObject * receiver, QEvent * e)  Zeile 
3904 + 0x10 Bytes       C++
        LyX.exe!lyx::frontend::GuiApplication::notify(QObject * receiver, 
QEvent * event)  Zeile 2118 + 0x13 Bytes      C++
        QtCored4.dll!QCoreApplication::notifyInternal(QObject * receiver, 
QEvent * event)  Zeile 732 + 0x15 Bytes       C++
        QtCored4.dll!QCoreApplication::sendSpontaneousEvent(QObject * receiver, 
QEvent * event)  Zeile 218 + 0x38 Bytes C++
        QtGuid4.dll!QETWidget::sendSpontaneousEvent(QObject * r, QEvent * e)  
Zeile 571 + 0x11 Bytes    C++
        QtGuid4.dll!QKeyMapper::sendKeyEvent(QWidget * widget, bool grab, 
QEvent::Type type, int code, QFlags<enum Qt::KeyboardModifier> modifiers, const 
QString & text, bool autorepeat, int count, unsigned int nativeScanCode, 
unsigned int nativeVirtualKey, unsigned int nativeModifiers, bool * __formal)  
Zeile 1195 + 0xd Bytes        C++
        QtGuid4.dll!QKeyMapperPrivate::translateKeyEvent(QWidget * widget, 
const tagMSG & msg, bool grab)  Zeile 1082 + 0x45 Bytes      C++
        QtGuid4.dll!QtWndProc(HWND__ * hwnd, unsigned int message, unsigned int 
wParam, long lParam)  Zeile 1771 + 0x36 Bytes   C++
        user32.dll!76656238()   
        [Unten angegebene Rahmen sind möglicherweise nicht korrekt und/oder 
fehlen, keine Symbole geladen für user32.dll]       
        user32.dll!766568ea()   
        user32.dll!76656899()   
        user32.dll!76657d31()   
        user32.dll!766804b9()   
        user32.dll!76657dfa()   
        QtCored4.dll!QEventDispatcherWin32::processEvents(QFlags<enum 
QEventLoop::ProcessEventsFlag> flags)  Zeile 807  C++
        QtGuid4.dll!QGuiEventDispatcherWin32::processEvents(QFlags<enum 
QEventLoop::ProcessEventsFlag> flags)  Zeile 1170 + 0x15 Bytes  C++
        QtCored4.dll!QEventLoop::processEvents(QFlags<enum 
QEventLoop::ProcessEventsFlag> flags)  Zeile 150     C++
        QtCored4.dll!QEventLoop::exec(QFlags<enum 
QEventLoop::ProcessEventsFlag> flags)  Zeile 201 + 0x2d Bytes C++
        QtCored4.dll!QCoreApplication::exec()  Zeile 1009 + 0x15 Bytes  C++
        QtGuid4.dll!QApplication::exec()  Zeile 3720    C++
        LyX.exe!lyx::frontend::GuiApplication::exec()  Zeile 1906 + 0x8 Bytes   
C++
        LyX.exe!lyx::LyX::exec(int & argc, char * * argv)  Zeile 398 + 0x28 
Bytes       C++
        LyX.exe!main(int argc, char * * argv)  Zeile 42 + 0x10 Bytes    C++
        LyX.exe!__tmainCRTStartup()  Zeile 555 + 0x19 Bytes     C
        LyX.exe!mainCRTStartup()  Zeile 371     C
        kernel32.dll!75f33677()         
        ntdll.dll!77219d42()    
        ntdll.dll!77219d15()    
>       LyX.exe!std::_Construct<int,int const &>(int * _Ptr, const int & _Val)  
> Zeile 48 + 0x2f Bytes   C++
        LyX.exe!std::allocator<int>::construct(int * _Ptr, const int & _Val)  
Zeile 197 + 0xd Bytes     C++
        LyX.exe!std::_Cons_val<std::allocator<int>,int,int const 
&>(std::allocator<int> & _Alval, int * _Pdest, const int & _Src)  Zeile 281    
C++
        LyX.exe!std::deque<int,std::allocator<int> >::push_back(const int & 
_Val)  Zeile 1267 + 0x2c Bytes      C++
        LyX.exe!std::queue<int,std::deque<int,std::allocator<int> > 
>::push(const int & _Val)  Zeile 113        C++
        LyX.exe!lyx::Graph::getPath(int from, int to)  Zeile 197        C++
        LyX.exe!lyx::Converters::getPath(const 
std::basic_string<char,std::char_traits<char>,std::allocator<char> > & from, 
const std::basic_string<char,std::char_traits<char>,std::allocator<char> > & 
to)  Zeile 708 + 0x2d Bytes    C++
        LyX.exe!lyx::Buffer::doExport(const 
std::basic_string<char,std::char_traits<char>,std::allocator<char> > & format, 
bool put_in_tempdir, bool includeall, 
std::basic_string<char,std::char_traits<char>,std::allocator<char> > & 
result_file)  Zeile 3486 + 0x23 Bytes   C++
        LyX.exe!lyx::Buffer::preview(const 
std::basic_string<char,std::char_traits<char>,std::allocator<char> > & format, 
bool includeall)  Zeile 3681 + 0x14 Bytes     C++
        LyX.exe!std::tr1::_Pmf_caller3<bool,lyx::Buffer>::_Call_pmf<bool 
(__thiscall 
lyx::Buffer::*)(std::basic_string<char,std::char_traits<char>,std::allocator<char>
 > const &,bool)const ,lyx::Buffer * 
const,std::basic_string<char,std::char_traits<char>,std::allocator<char> > 
const ,bool const >(const void * __formal, bool (const 
std::basic_string<char,std::char_traits<char>,std::allocator<char> > &, bool)* 
_Pm, lyx::Buffer * const & _Fx0, const 
std::basic_string<char,std::char_traits<char>,std::allocator<char> > & _Fx1, 
const bool & _Fx2)  Zeile 42 + 0x15 Bytes      C++
        LyX.exe!std::tr1::_Pmf_caller3<bool,lyx::Buffer>::_Apply_pmf<bool 
(__thiscall 
lyx::Buffer::*)(std::basic_string<char,std::char_traits<char>,std::allocator<char>
 > const &,bool)const ,lyx::Buffer * 
const,std::basic_string<char,std::char_traits<char>,std::allocator<char> > 
const ,bool const >(bool (const 
std::basic_string<char,std::char_traits<char>,std::allocator<char> > &, bool)* 
_Pm, lyx::Buffer * const & _Fx0, const 
std::basic_string<char,std::char_traits<char>,std::allocator<char> > & _Fx1, 
const bool & _Fx2)  Zeile 52 + 0x2b Bytes    C++
        LyX.exe!std::tr1::_Callable_pmf<bool (__thiscall 
lyx::Buffer::*const)(std::basic_string<char,std::char_traits<char>,std::allocator<char>
 > const &,bool)const ,lyx::Buffer,0>::_ApplyX<bool,lyx::Buffer * const 
&,std::basic_string<char,std::char_traits<char>,std::allocator<char> > const 
&,bool const &>(lyx::Buffer * const & _Ax0, const 
std::basic_string<char,std::char_traits<char>,std::allocator<char> > & _Ax1, 
const bool & _Ax2)  Zeile 9 + 0x1c Bytes    C++
        LyX.exe!std::tr1::_Bind3<std::tr1::_Callable_pmf<bool (__thiscall 
lyx::Buffer::*const)(std::basic_string<char,std::char_traits<char>,std::allocator<char>
 > const &,bool)const ,lyx::Buffer,0>,lyx::Buffer 
*,std::tr1::_Ph<1>,std::tr1::_Ph<2> 
>::_ApplyX<bool,std::basic_string<char,std::char_traits<char>,std::allocator<char>
 > const &,bool const &,std::tr1::_Nil &,std::tr1::_Nil &,std::tr1::_Nil 
&,std::tr1::_Nil &,std::tr1::_Nil &,std::tr1::_Nil &,std::tr1::_Nil 
&,std::tr1::_Nil &>(const 
std::basic_string<char,std::char_traits<char>,std::allocator<char> > & _Bx0, 
const bool & _Bx1, std::tr1::_Nil & _Bx2, std::tr1::_Nil & _Bx3, std::tr1::_Nil 
& _Bx4, std::tr1::_Nil & _Bx5, std::tr1::_Nil & _Bx6, std::tr1::_Nil & _Bx7, 
std::tr1::_Nil & _Bx8, std::tr1::_Nil & _Bx9)  Zeile 286      C++
        
LyX.exe!std::tr1::_Bind_base<bool,std::tr1::_Bind3<std::tr1::_Callable_pmf<bool 
(__thiscall 
lyx::Buffer::*const)(std::basic_string<char,std::char_traits<char>,std::allocator<char>
 > const &,bool)const ,lyx::Buffer,0>,lyx::Buffer 
*,std::tr1::_Ph<1>,std::tr1::_Ph<2> > 
>::operator()<std::basic_string<char,std::char_traits<char>,std::allocator<char>
 > const &,bool const &>(const 
std::basic_string<char,std::char_traits<char>,std::allocator<char> > & _CA0, 
const bool & _CA1)  Zeile 17     C++
        
LyX.exe!lyx::frontend::GuiView::GuiViewPrivate::runAndDestroy<std::tr1::_Bind<bool,bool,std::tr1::_Bind3<std::tr1::_Callable_pmf<bool
 (__thiscall 
lyx::Buffer::*const)(std::basic_string<char,std::char_traits<char>,std::allocator<char>
 > const &,bool)const ,lyx::Buffer,0>,lyx::Buffer 
*,std::tr1::_Ph<1>,std::tr1::_Ph<2> > > >(const 
std::tr1::_Bind<bool,bool,std::tr1::_Bind3<std::tr1::_Callable_pmf<bool 
(__thiscall 
lyx::Buffer::*const)(std::basic_string<char,std::char_traits<char>,std::allocator<char>
 > const &,bool)const ,lyx::Buffer,0>,lyx::Buffer 
*,std::tr1::_Ph<1>,std::tr1::_Ph<2> > > & func, const lyx::Buffer * orig, 
lyx::Buffer * buffer, const 
std::basic_string<char,std::char_traits<char>,std::allocator<char> > & format, 
const std::basic_string<char,std::char_traits<char>,std::allocator<char> > & 
msg)  Zeile 2954 + 0x10 Bytes C++
        LyX.exe!lyx::frontend::GuiView::GuiViewPrivate::previewAndDestroy(const 
lyx::Buffer * orig, lyx::Buffer * buffer, const 
std::basic_string<char,std::char_traits<char>,std::allocator<char> > & format)  
Zeile 2985 + 0x52 Bytes C++
        LyX.exe!QtConcurrent::StoredFunctorCall3<std::basic_string<unsigned 
int,std::char_traits<unsigned int>,std::allocator<unsigned int> 
>,std::basic_string<unsigned int,std::char_traits<unsigned 
int>,std::allocator<unsigned int> > (__cdecl*)(lyx::Buffer const *,lyx::Buffer 
*,std::basic_string<char,std::char_traits<char>,std::allocator<char> > const 
&),lyx::Buffer const *,lyx::Buffer 
*,std::basic_string<char,std::char_traits<char>,std::allocator<char> > 
>::runFunctor()  Zeile 694 + 0x61 Bytes    C++
        LyX.exe!QtConcurrent::RunFunctionTask<std::basic_string<unsigned 
int,std::char_traits<unsigned int>,std::allocator<unsigned int> > >::run()  
Zeile 103 + 0x13 Bytes     C++
        QtCored4.dll!QThreadPoolThread::run()  Zeile 106 + 0xc Bytes    C++
        QtCored4.dll!QThreadPrivate::start(void * arg)  Zeile 317       C++
        msvcr100d.dll!_callthreadstartex()  Zeile 314 + 0xf Bytes       C
        msvcr100d.dll!_threadstartex(void * ptd)  Zeile 297     C
        kernel32.dll!75f33677()         
        [Unten angegebene Rahmen sind möglicherweise nicht korrekt und/oder 
fehlen, keine Symbole geladen für kernel32.dll]     
        ntdll.dll!77219d42()    
        ntdll.dll!77219d15()    

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