Application: umbrello (2.9.5)
KDE Platform Version: 4.9.5
Qt Version: 4.8.4
Operating System: Linux 3.6.10-4.fc18.x86_64 x86_64
Distribution: "Fedora release 18 (Spherical Cow)"

-- Information about the crash:
- What I was doing when the application crashed: I openned the program, then openned the help to get hints so I can learn the program. I clicked the new button to start a new session then clicked to open pref, then the program crashed.

-- Backtrace:
Application: Umbrello UML Modeller (umbrello), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
81	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7fe384e78880 (LWP 19048))]

Thread 2 (Thread 0x7fe376ef7700 (LWP 22302)):
#0  0x000000322360e12d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000003225a840df in read (__nbytes=16, __buf=0x7fe376ef6ae0, __fd=<optimized out>) at /usr/include/bits/unistd.h:44
#2  g_wakeup_acknowledge (wakeup=0x2bc3dc0) at gwakeup.c:212
#3  0x0000003225a478d4 in g_main_context_check (context=context@entry=0x7fe3700009a0, max_priority=2147483647, fds=fds@entry=0x7fe370004dd0, n_fds=n_fds@entry=1) at gmain.c:3129
#4  0x0000003225a47ce2 in g_main_context_iterate (context=context@entry=0x7fe3700009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3287
#5  0x0000003225a47e64 in g_main_context_iteration (context=0x7fe3700009a0, may_block=1) at gmain.c:3351
#6  0x000000322efa60f6 in QEventDispatcherGlib::processEvents (this=0x7fe3700008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x000000322ef767df in QEventLoop::processEvents (this=this@entry=0x7fe376ef6cd0, flags=...) at kernel/qeventloop.cpp:149
#8  0x000000322ef76a68 in QEventLoop::exec (this=0x7fe376ef6cd0, flags=...) at kernel/qeventloop.cpp:204
#9  0x000000322ee78950 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#10 0x000000322ef5700f in QInotifyFileSystemWatcherEngine::run (this=0x3496e00) at io/qfilesystemwatcher_inotify.cpp:256
#11 0x000000322ee7b92c in QThreadPrivate::start (arg=0x3496e00) at thread/qthread_unix.cpp:338
#12 0x0000003223607d15 in start_thread (arg=0x7fe376ef7700) at pthread_create.c:308
#13 0x00000032232f246d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:114

Thread 1 (Thread 0x7fe384e78880 (LWP 19048)):
[KCrash Handler]
#6  UMLView::umlScene (this=0x0) at /usr/src/debug/kdesdk-4.9.5/umbrello/umbrello/umlview.cpp:56
#7  0x000000000074a7fd in UMLListView::mousePressEvent (this=0x3038440, me=0x7fffc529d040) at /usr/src/debug/kdesdk-4.9.5/umbrello/umbrello/umllistview.cpp:245
#8  0x0000003690619f30 in QWidget::event (this=0x3038440, event=0x7fffc529d040) at kernel/qwidget.cpp:8371
#9  0x00000036909c49f6 in QFrame::event (this=0x3038440, e=0x7fffc529d040) at widgets/qframe.cpp:557
#10 0x0000003690ad020b in QAbstractItemView::viewportEvent (this=0x3038440, event=0x7fffc529d040) at itemviews/qabstractitemview.cpp:1644
#11 0x0000003690b14a91 in QTreeView::viewportEvent (this=0x3038440, event=0x7fffc529d040) at itemviews/qtreeview.cpp:1257
#12 0x000000322ef77bf6 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x303a3b0, event=0x7fffc529d040) at kernel/qcoreapplication.cpp:1056
#13 0x00000036905ca59c in QApplicationPrivate::notify_helper (this=0x2bc0ce0, receiver=0x303a3b0, e=0x7fffc529d040) at kernel/qapplication.cpp:4558
#14 0x00000036905cf2ab in QApplication::notify (this=<optimized out>, receiver=0x303a3b0, e=0x7fffc529d040) at kernel/qapplication.cpp:4105
#15 0x000000368f646916 in KApplication::notify (this=0x7fffc529de40, receiver=0x303a3b0, event=0x7fffc529d040) at /usr/src/debug/kdelibs-4.9.5/kdeui/kernel/kapplication.cpp:311
#16 0x000000322ef77a8e in QCoreApplication::notifyInternal (this=0x7fffc529de40, receiver=0x303a3b0, event=0x7fffc529d040) at kernel/qcoreapplication.cpp:946
#17 0x00000036905cb40b in QApplicationPrivate::sendMouseEvent (receiver=0x303a3b0, event=0x7fffc529d040, alienWidget=0x303a3b0, nativeWidget=0x304d910, buttonDown=0x369109e268 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at ../../src/corelib/kernel/qcoreapplication.h:231
#18 0x0000003690645b74 in QETWidget::translateMouseEvent (this=0x304d910, event=<optimized out>) at kernel/qapplication_x11.cpp:4537
#19 0x0000003690644901 in QApplication::x11ProcessEvent (this=0x7fffc529de40, event=0x7fffc529d7b0) at kernel/qapplication_x11.cpp:3660
#20 0x000000369066aa5c in x11EventSourceDispatch (s=s@entry=0x2bcdea0, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#21 0x0000003225a47a75 in g_main_dispatch (context=0x2bc36b0) at gmain.c:2715
#22 g_main_context_dispatch (context=context@entry=0x2bc36b0) at gmain.c:3219
#23 0x0000003225a47da8 in g_main_context_iterate (context=context@entry=0x2bc36b0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3290
#24 0x0000003225a47e64 in g_main_context_iteration (context=0x2bc36b0, may_block=1) at gmain.c:3351
#25 0x000000322efa60d6 in QEventDispatcherGlib::processEvents (this=0x2b8c610, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#26 0x000000369066a73e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:207
#27 0x000000322ef767df in QEventLoop::processEvents (this=this@entry=0x7fffc529db80, flags=...) at kernel/qeventloop.cpp:149
#28 0x000000322ef76a68 in QEventLoop::exec (this=0x7fffc529db80, flags=...) at kernel/qeventloop.cpp:204
#29 0x000000322ef7b858 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#30 0x0000000000436c8b in main (argc=3, argv=0x7fffc529df98) at /usr/src/debug/kdesdk-4.9.5/umbrello/umbrello/main.cpp:111

Reported using DrKonqi