Application: umbrello (2.10.2)
KDE Platform Version: 4.10.2
Qt Version: 4.8.4
Operating System: Linux 3.8.0-19-generic x86_64
Distribution: Ubuntu 13.04

-- Information about the crash:
I opened xmi file I saved earlier. Afterwards when opening the file opening is  succesful, but when clicking entity-relationship diagram from left bar to set it visible program crashes. I tried this several times with same result.

The crash can be reproduced every time.

-- Backtrace:
Application: Umbrello UML Modeller (umbrello), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fb1220937c0 (LWP 10956))]

Thread 3 (Thread 0x7fb10d482700 (LWP 10959)):
#0  0x00007fb11e5b33cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fb11b3511dc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb11b3516ba in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb11551f4f6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fb11b374eb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fb11e2b0f8e in start_thread (arg=0x7fb10d482700) at pthread_create.c:311
#6  0x00007fb11e5bfe1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7fb0f8798700 (LWP 10964)):
#0  0x00007fb11e5b33cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fb11b3511dc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb11b351304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb11ff00036 in QEventDispatcherGlib::processEvents (this=0x7fb0f00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fb11fed038f in QEventLoop::processEvents (this=this@entry=0x7fb0f8797d90, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fb11fed0618 in QEventLoop::exec (this=this@entry=0x7fb0f8797d90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fb11fdd2410 in QThread::exec (this=this@entry=0x15c8d50) at thread/qthread.cpp:542
#7  0x00007fb11feb1edf in QInotifyFileSystemWatcherEngine::run (this=0x15c8d50) at io/qfilesystemwatcher_inotify.cpp:256
#8  0x00007fb11fdd4bec in QThreadPrivate::start (arg=0x15c8d50) at thread/qthread_unix.cpp:338
#9  0x00007fb11e2b0f8e in start_thread (arg=0x7fb0f8798700) at pthread_create.c:311
#10 0x00007fb11e5bfe1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7fb1220937c0 (LWP 10956)):
[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=this@entry=0x0) at graphicsview/qgraphicsview.cpp:1592
#8  0x000000000078e195 in UMLView::umlScene (this=this@entry=0x0) at ../../../umbrello/umbrello/umlview.cpp:60
#9  0x0000000000760099 in UMLListView::mouseReleaseEvent (this=0x13eafa0, me=0x7fff3fe101c0) at ../../../umbrello/umbrello/umllistview.cpp:334
#10 0x00007fb11f2c4a89 in QWidget::event (this=this@entry=0x13eafa0, event=event@entry=0x7fff3fe101c0) at kernel/qwidget.cpp:8375
#11 0x00007fb11f677316 in QFrame::event (this=0x13eafa0, e=0x7fff3fe101c0) at widgets/qframe.cpp:557
#12 0x00007fb11f78d8bb in QAbstractItemView::viewportEvent (this=this@entry=0x13eafa0, event=event@entry=0x7fff3fe101c0) at itemviews/qabstractitemview.cpp:1644
#13 0x00007fb11f7cd561 in QTreeView::viewportEvent (this=0x13eafa0, event=0x7fff3fe101c0) at itemviews/qtreeview.cpp:1257
#14 0x00007fb11fed17a6 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0xdc55b0, receiver=receiver@entry=0x1351ae0, event=event@entry=0x7fff3fe101c0) at kernel/qcoreapplication.cpp:1056
#15 0x00007fb11f2778bc in QApplicationPrivate::notify_helper (this=this@entry=0xdc55b0, receiver=receiver@entry=0x1351ae0, e=e@entry=0x7fff3fe101c0) at kernel/qapplication.cpp:4563
#16 0x00007fb11f27aa33 in QApplication::notify (this=this@entry=0x7fff3fe10fd0, receiver=receiver@entry=0x1351ae0, e=e@entry=0x7fff3fe101c0) at kernel/qapplication.cpp:4110
#17 0x00007fb120b70af6 in KApplication::notify (this=0x7fff3fe10fd0, receiver=0x1351ae0, event=0x7fff3fe101c0) at ../../kdeui/kernel/kapplication.cpp:311
#18 0x00007fb11fed163e in QCoreApplication::notifyInternal (this=0x7fff3fe10fd0, receiver=receiver@entry=0x1351ae0, event=event@entry=0x7fff3fe101c0) at kernel/qcoreapplication.cpp:946
#19 0x00007fb11f27d933 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#20 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x1351ae0, event=event@entry=0x7fff3fe101c0, alienWidget=alienWidget@entry=0x1351ae0, nativeWidget=nativeWidget@entry=0x13ec6f0, buttonDown=buttonDown@entry=0x7fb11fd55308 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#21 0x00007fb11f2f2ec4 in QETWidget::translateMouseEvent (this=this@entry=0x13ec6f0, event=event@entry=0x7fff3fe10940) at kernel/qapplication_x11.cpp:4631
#22 0x00007fb11f2f1ef1 in QApplication::x11ProcessEvent (this=0x7fff3fe10fd0, event=event@entry=0x7fff3fe10940) at kernel/qapplication_x11.cpp:3746
#23 0x00007fb11f31d0b2 in x11EventSourceDispatch (s=0xdc2380, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#24 0x00007fb11b350f05 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007fb11b351248 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007fb11b351304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007fb11ff00016 in QEventDispatcherGlib::processEvents (this=0xd93320, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#28 0x00007fb11f31d1ae in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#29 0x00007fb11fed038f in QEventLoop::processEvents (this=this@entry=0x7fff3fe10d10, flags=...) at kernel/qeventloop.cpp:149
#30 0x00007fb11fed0618 in QEventLoop::exec (this=this@entry=0x7fff3fe10d10, flags=...) at kernel/qeventloop.cpp:204
#31 0x00007fb11fed5cf6 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#32 0x00007fb11f275ffc in QApplication::exec () at kernel/qapplication.cpp:3828
#33 0x000000000043826b in main (argc=3, argv=0x7fff3fe11128) at ../../../umbrello/umbrello/main.cpp:111

Reported using DrKonqi