backtrace mixxx crash

#0  0xb7fdd424 in __kernel_vsyscall ()
#1  0xb6359827 in __GI_raise (sig=sig@entry=6)
    at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#2  0xb635cc53 in __GI_abort () at abort.c:89
#3  0xb658a595 in __gnu_cxx::__verbose_terminate_handler() ()
   from /usr/lib/i386-linux-gnu/libstdc++.so.6
#4  0xb65881f3 in ?? () from /usr/lib/i386-linux-gnu/libstdc++.so.6
#5  0xb658822f in std::terminate() ()
   from /usr/lib/i386-linux-gnu/libstdc++.so.6
#6  0xb65884f5 in __cxa_rethrow () from /usr/lib/i386-linux-gnu/libstdc++.so.6
#7  0xb6dc6d35 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/i386-linux-gnu/libQtCore.so.4
#8  0xb6dcc8fe in QCoreApplication::exec() ()
   from /usr/lib/i386-linux-gnu/libQtCore.so.4
#9  0xb7475a24 in QApplication::exec() ()
   from /usr/lib/i386-linux-gnu/libQtGui.so.4
#10 0x080b9520 in main (argc=5, argv=0xbfffef24) at src/main.cpp:350