It will not fully start up with way.
I get the intro window and a blank krita program window.

(gdb) run
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /usr/bin/krita  
warning: File "/lib64/libthread_db-1.0.so" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-loa
d".
warning: Unable to find libthread_db matching inferior's thread library, thread debugging will not be available.
Legacy integer arithmetics implementation  
[New LWP 4816]
[New LWP 4817]
[New LWP 4818]
[New LWP 4819]
[LWP 4818 exited]
[New LWP 4820]
[New LWP 4821]
[New LWP 4822]
[LWP 4822 exited]
[LWP 4821 exited]
[LWP 4819 exited]
[LWP 4816 exited]
[LWP 4817 exited]
[New LWP 4823]
[New LWP 4824]
[LWP 4820 exited]
libpng warning: iCCP: too many profiles
libpng warning: iCCP: too many profiles
libpng warning: iCCP: too many profiles
libpng warning: iCCP: too many profiles
[New LWP 4825]
[New LWP 4826]
Object::connect: No such signal QToolButton::triggered()
Object::connect:  (sender name:   'bnRaise')
Object::connect: No such signal QToolButton::triggered()
Object::connect:  (sender name:   'bnLower')
[New LWP 4827]
[LWP 4827 exited]
[New LWP 4828]

Program received signal SIG33, Real-time event 33.
[Switching to LWP 4825]
0x00007ffff0108e7f in pthread_cond_wait () from /lib64/libpthread.so.0
(gdb) thread apply all bt

Thread 14 (LWP 4828):
#0  0x00007fffef8b1d22 in ?? () from /lib64/libz.so.1
#1  0x00007fffef8b3a0d in inflate () from /lib64/libz.so.1
#2  0x00007ffff6080ab8 in KGzipFilter::uncompress() () from /usr/lib64/libkdecore.so.5
#3  0x00007ffff6082776 in KFilterDev::readData(char*, long long) () from /usr/lib64/libkdecore.so.5
#4  0x00007ffff5c03bf6 in QIODevice::read(char*, long long) () from /usr/lib64/qt4/libQtCore.so.4
#5  0x00007ffff5c04616 in QIODevice::readAll() () from /usr/lib64/qt4/libQtCore.so.4
#6  0x00007ffff612c7ff in KZipFileEntry::data() const () from /usr/lib64/libkdecore.so.5
#7  0x00007fffdab502a7 in ?? () from /usr/lib64/kde4/plugins/imageformats/kimg_kra.so
#8  0x00007ffff67d488f in QImageReader::read(QImage*) () from /usr/lib64/qt4/libQtGui.so.4
#9  0x00007ffff67d4e58 in QImageReader::read() () from /usr/lib64/qt4/libQtGui.so.4
#10 0x00007ffff67c68e3 in QImage::load(QString const&, char const*) () from /usr/lib64/qt4/libQtGui.so.4
#11 0x00007ffff67c69fd in QImage::QImage(QString const&, char const*) () from /usr/lib64/qt4/libQtGui.so.4
#12 0x00007fffc977d81e in ?? () from /usr/lib64/kde4/kritaimagedocker.so
#13 0x00007ffff5b7632f in ?? () from /usr/lib64/qt4/libQtCore.so.4
#14 0x00007ffff010351c in ?? () from /lib64/libpthread.so.0
#15 0x00007ffff52fb1ad in clone () from /lib64/libc.so.6

Thread 12 (LWP 4826):
#0  0x00007ffff52f35a3 in select () from /lib64/libc.so.6
#1  0x00007ffff5ca0741 in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timeval const*) () from /usr/lib64/qt4/libQtCore.so.4
#2  0x00007ffff5ca5e3c in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timeval*) ()
  from /usr/lib64/qt4/libQtCore.so.4
#3  0x00007ffff5ca62d3 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#4  0x00007ffff5c74e51 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#5  0x00007ffff5c75165 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/qt4/libQtCore.so.4
#6  0x00007ffff5b73b19 in QThread::exec() () from /usr/lib64/qt4/libQtCore.so.4
#7  0x00007ffff5c567e3 in ?? () from /usr/lib64/qt4/libQtCore.so.4
#8  0x00007ffff5b7632f in ?? () from /usr/lib64/qt4/libQtCore.so.4
#9  0x00007ffff010351c in ?? () from /lib64/libpthread.so.0
#10 0x00007ffff52fb1ad in clone () from /lib64/libc.so.6

Thread 11 (LWP 4825):
#0  0x00007ffff0108e7f in pthread_cond_wait () from /lib64/libpthread.so.0
#1  0x00007ffff5b76824 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/qt4/libQtCore.so.4
#2  0x00007ffff6ca4097 in ?? () from /usr/lib64/qt4/libQtGui.so.4
#3  0x00007ffff5b7632f in ?? () from /usr/lib64/qt4/libQtCore.so.4
#4  0x00007ffff010351c in ?? () from /lib64/libpthread.so.0
#5  0x00007ffff52fb1ad in clone () from /lib64/libc.so.6
---Type <return> to continue, or q <return> to quit---

Thread 10 (LWP 4824):
#0  0x00007ffff0108e7f in pthread_cond_wait () from /lib64/libpthread.so.0
#1  0x00007ffff5b76824 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/qt4/libQtCore.so.4
#2  0x00007ffff5b72b63 in QSemaphore::tryAcquire(int, int) () from /usr/lib64/qt4/libQtCore.so.4
#3  0x00007ffff29b79aa in KisTileDataSwapper::run() () from /usr/lib64/libkritaimage.so.14
#4  0x00007ffff5b7632f in ?? () from /usr/lib64/qt4/libQtCore.so.4
#5  0x00007ffff010351c in ?? () from /lib64/libpthread.so.0
#6  0x00007ffff52fb1ad in clone () from /lib64/libc.so.6

Thread 9 (LWP 4823):
#0  0x00007ffff0108e7f in pthread_cond_wait () from /lib64/libpthread.so.0
#1  0x00007ffff5b76824 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/qt4/libQtCore.so.4
#2  0x00007ffff5b7275b in QSemaphore::acquire(int) () from /usr/lib64/qt4/libQtCore.so.4
#3  0x00007ffff299d19e in ?? () from /usr/lib64/libkritaimage.so.14
#4  0x00007ffff299d5bd in ?? () from /usr/lib64/libkritaimage.so.14
#5  0x00007ffff5b7632f in ?? () from /usr/lib64/qt4/libQtCore.so.4
#6  0x00007ffff010351c in ?? () from /lib64/libpthread.so.0
#7  0x00007ffff52fb1ad in clone () from /lib64/libc.so.6

Thread 1 (LWP 4815):
#0  0x00007ffff0102e70 in ?? () from /lib64/libpthread.so.0
#1  0x00007ffff52c8a46 in setuid () from /lib64/libc.so.6
#2  0x00007fffea58fea4 in QCA::init(QCA::MemoryMode, int) () from /usr/lib64/libqca.so.2
#3  0x00007ffff1ca0816 in ?? () from /usr/lib64/libkoodf.so.14
#4  0x00007ffff1c86c32 in KoStore::createStore(QString const&, KoStore::Mode, QByteArray const&, KoStore::Backend, bool) ()
  from /usr/lib64/libkoodf.so.14
#5  0x00007ffff786b9f3 in ?? () from /usr/lib64/libkritaui.so.14
#6  0x00007ffff7866cef in KisApplication::checkAutosaveFiles() () from /usr/lib64/libkritaui.so.14
#7  0x00007ffff786914c in KisApplication::start() () from /usr/lib64/libkritaui.so.14
#8  0x0000000000402770 in ?? ()
#9  0x00007ffff5226a94 in __libc_start_main () from /lib64/libc.so.6
#10 0x0000000000402ef9 in _start ()


On Mon, Mar 21, 2016 at 1:09 PM, Boudewijn Rempt via KDE Bugzilla <bugzilla_noreply@kde.org> wrote:
https://bugs.kde.org/show_bug.cgi?id=346967

--- Comment #10 from Boudewijn Rempt <boud@valdyas.org> ---
To get a backtrace if the crash dialog doesn't popup automatically, you need to
start krita with gdb.

In a terminal, type

gdb krita

press enter

on the gdb prompt, type run

Reproduce the crash, switch back to the terminal where gdb is running and type

thread apply all bt

and attach the full output here.

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--
Douglas E Knapp, MSAOM, LAc.