Version:           Kdenlive 0.7.3 (using KDE 4.2.2)
OS:                Linux
Installed from:    Ubuntu Packages

- Opening the of the .mod files gives op problem. 
- Putting them into the timeline gives also no problem.
But after playing an example of the already edited files the folowing error appears(the following error also appears after placing one file into the timeline and playing it):

This backtrace appears to be of no use.
This is probably because your packages are built in a way which prevents creation of proper backtraces, or the stack frame was seriously corrupted in the crash.
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[Thread debugging using libthread_db enabled]
[New Thread 0xb5e54700 (LWP 8743)]
[New Thread 0xae30fb90 (LWP 8803)]
[New Thread 0xab3beb90 (LWP 8802)]
[New Thread 0xac5c2b90 (LWP 8759)]
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0xb80ac430 in __kernel_vsyscall ()
[Current thread is 0 (LWP 8743)]
Thread 4 (Thread 0xac5c2b90 (LWP 8759)):
#0 0xb80ac430 in __kernel_vsyscall ()
#1 0xb677a7b1 in select () from /lib/tls/i686/cmov/libc.so.6
#2 0xb743d380 in ?? () from /usr/lib/libQtCore.so.4
#3 0xb736b96e in ?? () from /usr/lib/libQtCore.so.4
#4 0xb66864ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5 0xb678249e in clone () from /lib/tls/i686/cmov/libc.so.6
Thread 3 (Thread 0xab3beb90 (LWP 8802)):
#0 0xb80ac430 in __kernel_vsyscall ()
#1 0xb673d7a6 in nanosleep () from /lib/tls/i686/cmov/libc.so.6
#2 0xb673d5be in sleep () from /lib/tls/i686/cmov/libc.so.6
#3 0xb7eb28b2 in ?? () from /usr/lib/libkdeui.so.5
#4 0xb7eb3274 in KCrash::defaultCrashHandler () from /usr/lib/libkdeui.so.5
#5 <signal handler called>
#6 0xb3500334 in ?? ()
#7 0xb3502083 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
Thread 2 (Thread 0xae30fb90 (LWP 8803)):
#0 0xb80ac430 in __kernel_vsyscall ()
#1 0xb668a0e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb67912ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3 0xb3f64d2c in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
Thread 1 (Thread 0xb5e54700 (LWP 8743)):
#0 0xb80ac430 in __kernel_vsyscall ()
#1 0xb668a0e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb67912ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3 0xb736c9b2 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#4 0xb736bb13 in QThread::wait () from /usr/lib/libQtCore.so.4
#5 0xb74402fe in ?? () from /usr/lib/libQtCore.so.4
#6 0xb744081a in ?? () from /usr/lib/libQtCore.so.4
#7 0xb66ccbb9 in exit () from /lib/tls/i686/cmov/libc.so.6
#8 0xb577a165 in ?? () from /usr/lib/libgdk-x11-2.0.so.0
#9 0xb7e422fa in KApplication::xioErrhandler () from /usr/lib/libkdeui.so.5
#10 0xb7e42336 in ?? () from /usr/lib/libkdeui.so.5
#11 0xb3d1f257 in ?? ()
#12 0xb6475f22 in _XIOError () from /usr/lib/libX11.so.6
#13 0xb647d743 in ?? () from /usr/lib/libX11.so.6
#14 0xb647dccd in _XReply () from /usr/lib/libX11.so.6
#15 0xb645af83 in XGetWindowProperty () from /usr/lib/libX11.so.6
#16 0xb7f97da2 in NETWinInfo::update () from /usr/lib/libkdeui.so.5
#17 0xb7f9fc05 in NETWinInfo::NETWinInfo () from /usr/lib/libkdeui.so.5
#18 0xb7f91fe3 in KWindowInfo::KWindowInfo () from /usr/lib/libkdeui.so.5
#19 0xb7f8d6f7 in KWindowSystem::windowInfo () from /usr/lib/libkdeui.so.5
#20 0xb7f24397 in KMainWindow::saveWindowSize () from /usr/lib/libkdeui.so.5
#21 0xb7f25634 in KMainWindow::saveMainWindowSettings () from /usr/lib/libkdeui.so.5
#22 0xb7f256af in KMainWindow::saveAutoSaveSettings () from /usr/lib/libkdeui.so.5
#23 0xb7f26933 in KMainWindow::qt_metacall () from /usr/lib/libkdeui.so.5
#24 0xb7f69f7a in KXmlGuiWindow::qt_metacall () from /usr/lib/libkdeui.so.5
#25 0x080e94ec in MainWindow::qt_metacall ()
#26 0xb7475ca8 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#27 0xb7476932 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#28 0xb74b1717 in QTimer::timeout () from /usr/lib/libQtCore.so.4
#29 0xb747b6fe in QTimer::timerEvent () from /usr/lib/libQtCore.so.4
#30 0xb747015f in QObject::event () from /usr/lib/libQtCore.so.4
#31 0xb6a66e9c in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#32 0xb6a6f19e in QApplication::notify () from /usr/lib/libQtGui.so.4
#33 0xb7e4294d in KApplication::notify () from /usr/lib/libkdeui.so.5
#34 0xb745fa3b in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#35 0xb748ed71 in ?? () from /usr/lib/libQtCore.so.4
#36 0xb748b4e0 in ?? () from /usr/lib/libQtCore.so.4
#37 0xb61bab88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#38 0xb61be0eb in ?? () from /usr/lib/libglib-2.0.so.0
#39 0xb61be268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#40 0xb748b438 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#41 0xb6b08365 in ?? () from /usr/lib/libQtGui.so.4
#42 0xb745e06a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#43 0xb745e4aa in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#44 0xb6aef310 in QDragManager::drag () from /usr/lib/libQtGui.so.4
#45 0xb6a7a53a in QDrag::exec () from /usr/lib/libQtGui.so.4
#46 0xb6a7a5e4 in QDrag::exec () from /usr/lib/libQtGui.so.4
#47 0x081673ae in ProjectListView::mouseMoveEvent ()
#48 0xb6abd9ad in QWidget::event () from /usr/lib/libQtGui.so.4
#49 0xb6e97993 in QFrame::event () from /usr/lib/libQtGui.so.4
#50 0xb6f3794f in QAbstractScrollArea::viewportEvent () from /usr/lib/libQtGui.so.4
#51 0xb6fe9647 in QAbstractItemView::viewportEvent () from /usr/lib/libQtGui.so.4
#52 0xb70240c4 in QTreeView::viewportEvent () from /usr/lib/libQtGui.so.4
#53 0xb6f39f55 in ?? () from /usr/lib/libQtGui.so.4
#54 0xb745ec5a in QCoreApplicationPrivate::sendThroughObjectEventFilters () from /usr/lib/libQtCore.so.4
#55 0xb6a66e7a in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#56 0xb6a6fb11 in QApplication::notify () from /usr/lib/libQtGui.so.4
#57 0xb7e4294d in KApplication::notify () from /usr/lib/libkdeui.so.5
#58 0xb745fa3b in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#59 0xb6a6eb7e in QApplicationPrivate::sendMouseEvent () from /usr/lib/libQtGui.so.4
#60 0xb6ade97e in ?? () from /usr/lib/libQtGui.so.4
#61 0xb6addca7 in QApplication::x11ProcessEvent () from /usr/lib/libQtGui.so.4
#62 0xb6b08c6a in ?? () from /usr/lib/libQtGui.so.4
#63 0xb61bab88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#64 0xb61be0eb in ?? () from /usr/lib/libglib-2.0.so.0
#65 0xb61be268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#66 0xb748b438 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#67 0xb6b08365 in ?? () from /usr/lib/libQtGui.so.4
#68 0xb745e06a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#69 0xb745e4aa in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#70 0xb7460959 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#71 0xb6a66d17 in QApplication::exec () from /usr/lib/libQtGui.so.4
#72 0x080ca8cc in main ()
#0 0xb80ac430 in __kernel_vsyscall ()
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