Application: umbrello (2.10.0)
KDE Platform Version: 4.10.00
Qt Version: 4.8.2
Operating System: Linux 3.2.0-38-generic x86_64
Distribution: Ubuntu 12.04.2 LTS

-- Information about the crash:
- What I was doing when the application crashed:

Umbrello programmatically crashes when I open my file and I select the usecase diagram.
Umbrello version 2.10.0, kde 4.10, kubuntu 12.04.1

The crash can be reproduced every time.

-- Backtrace:
Application: Modellatore UML Umbrello (umbrello), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f8be1abc780 (LWP 2351))]

Thread 3 (Thread 0x7f8bd020a700 (LWP 2352)):
#0  QTimerInfoList::repairTimersIfNeeded (this=0x7f8bc8002860) at kernel/qeventdispatcher_unix.cpp:408
#1  0x00007f8bdec073c1 in QTimerInfoList::timerWait (this=0x7f8bc8002860, tm=...) at kernel/qeventdispatcher_unix.cpp:451
#2  0x00007f8bdec05e5c in timerSourcePrepareHelper (src=<optimized out>, timeout=0x7f8bd0209c6c) at kernel/qeventdispatcher_glib.cpp:136
#3  0x00007f8bdec05f05 in timerSourcePrepare (source=<optimized out>, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#4  0x00007f8bdb0b1846 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f8bdb0b1f5b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f8bdb0b2164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f8bdec06906 in QEventDispatcherGlib::processEvents (this=0x7f8bc80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#8  0x00007f8bdebd5e42 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#9  0x00007f8bdebd6097 in QEventLoop::exec (this=0x7f8bd0209dd0, flags=...) at kernel/qeventloop.cpp:204
#10 0x00007f8bdead5057 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#11 0x00007f8bdebb5b4f in QInotifyFileSystemWatcherEngine::run (this=0x27f4f60) at io/qfilesystemwatcher_inotify.cpp:248
#12 0x00007f8bdead807b in QThreadPrivate::start (arg=0x27f4f60) at thread/qthread_unix.cpp:307
#13 0x00007f8bddc75e9a in start_thread (arg=0x7f8bd020a700) at pthread_create.c:308
#14 0x00007f8bddf7eccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#15 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f8bc7fff700 (LWP 2353)):
#0  0x00007f8bddc77f69 in __pthread_mutex_lock (mutex=0x7f8bc0000a60) at pthread_mutex_lock.c:92
#1  0x00007f8bdb0ed5a1 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8bdb0b1851 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8bdb0b1f5b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8bdb0b2164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f8bdec06906 in QEventDispatcherGlib::processEvents (this=0x7f8bc00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007f8bdebd5e42 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f8bdebd6097 in QEventLoop::exec (this=0x7f8bc7ffedd0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f8bdead5057 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#9  0x00007f8bdebb5b4f in QInotifyFileSystemWatcherEngine::run (this=0x2d6dc00) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f8bdead807b in QThreadPrivate::start (arg=0x2d6dc00) at thread/qthread_unix.cpp:307
#11 0x00007f8bddc75e9a in start_thread (arg=0x7f8bc7fff700) at pthread_create.c:308
#12 0x00007f8bddf7eccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f8be1abc780 (LWP 2351)):
[KCrash Handler]
#6  operator QGraphicsScene* (this=<error reading variable: Cannot access memory at address 0x8>) at ../../include/QtCore/../../src/corelib/kernel/qpointer.h:78
#7  QGraphicsView::scene (this=0x0) at graphicsview/qgraphicsview.cpp:1592
#8  0x0000000000778706 in UMLListView::mouseReleaseEvent (this=0x2b35c90, me=0x7fff26bb3ec0) at ../../../umbrello/umbrello/umllistview.cpp:334
#9  0x00007f8bdf87afb4 in QWidget::event (this=0x2b35c90, event=0x7fff26bb3ec0) at kernel/qwidget.cpp:8371
#10 0x00007f8bdfc3b836 in QFrame::event (this=0x2b35c90, e=0x7fff26bb3ec0) at widgets/qframe.cpp:557
#11 0x00007f8bdfd4feeb in QAbstractItemView::viewportEvent (this=0x2b35c90, event=0x7fff26bb3ec0) at itemviews/qabstractitemview.cpp:1644
#12 0x00007f8bdfd97c75 in QTreeView::viewportEvent (this=0x2b35c90, event=0x7fff26bb3ec0) at itemviews/qtreeview.cpp:1257
#13 0x00007f8bdebd7498 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x2b2e150, event=0x7fff26bb3ec0) at kernel/qcoreapplication.cpp:1025
#14 0x00007f8bdf82a77f in notify_helper (e=0x7fff26bb3ec0, receiver=0x2b2e150, this=0x2601ce0) at kernel/qapplication.cpp:4552
#15 QApplicationPrivate::notify_helper (this=0x2601ce0, receiver=0x2b2e150, e=0x7fff26bb3ec0) at kernel/qapplication.cpp:4528
#16 0x00007f8bdf82ff2f in QApplication::notify (this=<optimized out>, receiver=0x2b2e150, e=0x7fff26bb3ec0) at kernel/qapplication.cpp:4099
#17 0x00007f8be0565b76 in KApplication::notify (this=0x7fff26bb4bc0, receiver=0x2b2e150, event=0x7fff26bb3ec0) at ../../kdeui/kernel/kapplication.cpp:311
#18 0x00007f8bdebd730c in QCoreApplication::notifyInternal (this=0x7fff26bb4bc0, receiver=0x2b2e150, event=0x7fff26bb3ec0) at kernel/qcoreapplication.cpp:915
#19 0x00007f8bdf82b782 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#20 QApplicationPrivate::sendMouseEvent (receiver=0x2b2e150, event=0x7fff26bb3ec0, alienWidget=0x2b2e150, nativeWidget=0x2b39130, buttonDown=0x2b2e150, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3167
#21 0x00007f8bdf8aab15 in QETWidget::translateMouseEvent (this=0x2b39130, event=<optimized out>) at kernel/qapplication_x11.cpp:4617
#22 0x00007f8bdf8a9ace in QApplication::x11ProcessEvent (this=0x7fff26bb4bc0, event=0x7fff26bb4790) at kernel/qapplication_x11.cpp:3732
#23 0x00007f8bdf8d3052 in x11EventSourceDispatch (s=0x260b770, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#24 0x00007f8bdb0b1d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f8bdb0b20a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f8bdb0b2164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f8bdec0689f in QEventDispatcherGlib::processEvents (this=0x25cf470, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#28 0x00007f8bdf8d2cde in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#29 0x00007f8bdebd5e42 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#30 0x00007f8bdebd6097 in QEventLoop::exec (this=0x7fff26bb4b30, flags=...) at kernel/qeventloop.cpp:204
#31 0x00007f8bdebdb3e7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#32 0x000000000043b106 in main (argc=3, argv=0x7fff26bb4fd8) at ../../../umbrello/umbrello/main.cpp:111

Reported using DrKonqi