Version:            (using KDE 4.1.4)
OS:                Linux
Installed from:    Debian stable Packages

okular crashed with the following stack. I was clicking around in the printer properties but did not change anything.Then I selected a concrete page range (9-27) and set the color to grayscale and clicked on print.
Second try worked but i did not open the printer properties this time.

Application: Okular (okular), signal SIGABRT
[Current thread is 0 (LWP 7060)]

Thread 3 (Thread 0xb29a7b90 (LWP 17290)):
#0  0xb8074430 in __kernel_vsyscall ()
#1  0xb6536075 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb6b72bbd in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb76686f2 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#4  0xb72b264a in ?? () from /usr/lib/libQtGui.so.4
#5  0xb76676ae in ?? () from /usr/lib/libQtCore.so.4
#6  0xb653250f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb6b64a0e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xb21a6b90 (LWP 17291)):
#0  0xb6533a3c in pthread_mutex_lock () from /lib/tls/i686/cmov/libpthread.so.0
#1  0xb6b72d86 in pthread_mutex_lock () from /lib/tls/i686/cmov/libc.so.6
#2  0xb657e579 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#3  0xb6581dc3 in ?? () from /usr/lib/libglib-2.0.so.0
#4  0xb6581f81 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#5  0xb7782497 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#6  0xb775652a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#7  0xb77566ea in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#8  0xb7664419 in QThread::exec () from /usr/lib/libQtCore.so.4
#9  0xb773a88b in ?? () from /usr/lib/libQtCore.so.4
#10 0xb76676ae in ?? () from /usr/lib/libQtCore.so.4
#11 0xb653250f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#12 0xb6b64a0e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb61ec6c0 (LWP 7060)):
[KCrash Handler]
#6  0xb8074430 in __kernel_vsyscall ()
#7  0xb6aae8a0 in raise () from /lib/tls/i686/cmov/libc.so.6
#8  0xb6ab0268 in abort () from /lib/tls/i686/cmov/libc.so.6
#9  0xb765f795 in qt_message_output () from /usr/lib/libQtCore.so.4
#10 0xb765f872 in qFatal () from /usr/lib/libQtCore.so.4
#11 0xb765f915 in qt_assert () from /usr/lib/libQtCore.so.4
#12 0xb32acc50 in Poppler::PSConverter::convert () from /usr/lib/libpoppler-qt4.so.3
#13 0xb32d0765 in ?? () from /usr/lib/kde4/okularGenerator_poppler.so
#14 0xb4b25fa7 in Okular::Document::print () from /usr/lib/libokularcore.so.1
#15 0xb4bbd376 in ?? () from /usr/lib/kde4/okularpart.so
#16 0xb4bbd66a in ?? () from /usr/lib/kde4/okularpart.so
#17 0xb4bc7677 in ?? () from /usr/lib/kde4/okularpart.so
#18 0xb776ca60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#19 0xb776ce60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#20 0xb6e035f1 in QAction::triggered () from /usr/lib/libQtGui.so.4
#21 0xb6e03f5f in QAction::activate () from /usr/lib/libQtGui.so.4
#22 0xb71e1564 in ?? () from /usr/lib/libQtGui.so.4
#23 0xb71e1ff2 in QMenu::mouseReleaseEvent () from /usr/lib/libQtGui.so.4
#24 0xb7cfcfc5 in KMenu::mouseReleaseEvent () from /usr/lib/libkdeui.so.5
#25 0xb6e61962 in QWidget::event () from /usr/lib/libQtGui.so.4
#26 0xb71e42e9 in QMenu::event () from /usr/lib/libQtGui.so.4
#27 0xb6e098ec in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#28 0xb6e120e1 in QApplication::notify () from /usr/lib/libQtGui.so.4
#29 0xb7c27d1d in KApplication::notify () from /usr/lib/libkdeui.so.5
#30 0xb7757e61 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#31 0xb6e1136e in QApplicationPrivate::sendMouseEvent () from /usr/lib/libQtGui.so.4
#32 0xb6e7b8de in ?? () from /usr/lib/libQtGui.so.4
#33 0xb6e7a9e5 in QApplication::x11ProcessEvent () from /usr/lib/libQtGui.so.4
#34 0xb6ea47aa in ?? () from /usr/lib/libQtGui.so.4
#35 0xb657e718 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#36 0xb6581dc3 in ?? () from /usr/lib/libglib-2.0.so.0
#37 0xb6581f81 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#38 0xb7782478 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#39 0xb6ea3ea5 in ?? () from /usr/lib/libQtGui.so.4
#40 0xb775652a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#41 0xb77566ea in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#42 0xb7758da5 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#43 0xb6e09767 in QApplication::exec () from /usr/lib/libQtGui.so.4
#44 0x0804dfaf in _start ()