Qt crashes when loading image file

// code placeholder
path=eventDict['path']
image=QPixmap(path)
if not image.isNull():
    transformation=Qt.SmoothTransformation
    if fileInfo.size()>3145728:# 3 MB
        transformation = Qt.FastTransformation
        if image.width()>320 and image.height()>320:
            result = image.scaled(320, 320).scaled(32, 32, Qt.IgnoreAspectRatio, transformation)
        else:
            result=image
result.save(thumbnailPath,"png")

// code placeholder
OS Version: Mac OS X 10.9.5 (13F34)
Report Version: 11
Anonymous UUID: 1FB1182A-75DC-96B2-2899-83A7CA5FAE02

Sleep/Wake UUID: 81BAF6DD-75B2-4F52-AEC1-0C31A8385BA1

Crashed Thread: 0 CrBrowserMain Dispatch queue: com.apple.main-thread

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x000000032804bde4

VM Regions Near 0x32804bde4:
CG shared images 00000001c871f000-00000001c8727000 [ 32K] r--/r-- SM=SHM 
--> 
__TEXT 0000123400000000-000012340047c000 [ 4592K] r-x/rwx SM=COW /System/Library/Extensions/AppleIntelHD4000GraphicsGLDriver.bundle/Contents/MacOS/AppleIntelHD4000GraphicsGLDriver

Thread 0 Crashed:: CrBrowserMain Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x00007fff8f885292 __kill + 10
1 libsystem_platform.dylib 0x00007fff8c8d05aa _sigtramp + 26
2 QtGui 0x000000010582369e qt_blend_argb32_on_argb32_ssse3(unsigned char*, int, unsigned char const*, int, int, int, int) + 350
3 QtGui 0x0000000105715f07 QRasterPaintEnginePrivate::drawImage(QPointF const&, QImage const&, void (*)(unsigned char*, int, unsigned char const*, int, int, int, int), QRect const&, int, QRect const&) + 503
4 QtGui 0x000000010571fb26 QRasterPaintEngine::drawImage(QRectF const&, QImage const&, QRectF const&, QFlags<Qt::ImageConversionFlag>) + 7750
5 QtGui 0x000000010573562f QPainter::drawPixmap(QRectF const&, QPixmap const&, QRectF const&) + 1039
6 QtWidgets 0x0000000105fcb693 QCommonStyle::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const + 18019
7 QtWidgets 0x00000001063051e3 QMacStyle::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const + 18339
8 QtWidgets 0x0000000105fc7521 QCommonStyle::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const + 1265
9 QtWidgets 0x0000000106300c6d QMacStyle::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const + 557
10 QtWidgets 0x0000000105ff7f8a QStyleSheetStyle::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const + 19114
11 QtWidgets 0x00000001060da365 QPushButton::paintEvent(QPaintEvent*) + 117
12 QtWidgets.so 0x0000000105afe8d0 sipQPushButton::paintEvent(QPaintEvent*) + 128
13 QtWidgets 0x0000000105f8b28a QWidget::event(QEvent*) + 2154
14 QtWidgets 0x000000010603a9ff QAbstractButton::event(QEvent*) + 175
15 QtWidgets.so 0x0000000105aff77f sipQPushButton::event(QEvent*) + 191
16 QtWidgets 0x0000000105f4a58d QApplicationPrivate::notify_helper(QObject*, QEvent*) + 269
17 QtWidgets 0x0000000105f4ced2 QApplication::notify(QObject*, QEvent*) + 5906
18 QtWidgets.so 0x0000000105b1c2b7 sipQApplication::notify(QObject*, QEvent*) + 231
19 QtCore 0x0000000103c8c544 QCoreApplication::notifyInternal2(QObject*, QEvent*) + 164
20 QtWidgets 0x0000000105f84acb QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) + 3467
21 QtWidgets 0x0000000105f852f8 QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) + 1192
22 QtWidgets 0x0000000105f84d70 QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) + 4144
23 QtWidgets 0x0000000105f852f8 QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) + 1192
24 QtWidgets 0x0000000105f85186 QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) + 822
25 QtWidgets 0x0000000105f85186 QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) + 822
26 QtWidgets 0x0000000105f84d70 QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) + 4144
27 QtWidgets 0x0000000105f852f8 QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) + 1192
28 QtWidgets 0x0000000105f84d70 QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) + 4144
29 QtWidgets 0x0000000105f852f8 QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) + 1192
30 QtWidgets 0x0000000105f84d70 QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) + 4144
31 QtWidgets 0x0000000105f852f8 QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) + 1192
32 QtWidgets 0x0000000105f84d70 QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) + 4144
33 QtWidgets 0x0000000105f57d9e QWidgetBackingStore::doSync() + 4830
34 QtWidgets 0x0000000105f8b4bc QWidget::event(QEvent*) + 2716
35 QtWidgets.so 0x0000000105b0ac8f sipQDialog::event(QEvent*) + 191
36 QtWidgets 0x0000000105f4a58d QApplicationPrivate::notify_helper(QObject*, QEvent*) + 269
37 QtWidgets 0x0000000105f4ced2 QApplication::notify(QObject*, QEvent*) + 5906
38 QtWidgets.so 0x0000000105b1c2b7 sipQApplication::notify(QObject*, QEvent*) + 231
39 QtCore 0x0000000103c8c544 QCoreApplication::notifyInternal2(QObject*, QEvent*) + 164
40 QtCore 0x0000000103c8d1c8 QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 600
41 libqcocoa.dylib 0x000000011179ff5e QCocoaEventDispatcherPrivate::processPostedEvents() + 190
42 libqcocoa.dylib 0x00000001117a0821 QCocoaEventDispatcherPrivate::postedEventsSourceCallback(void*) + 33
43 com.apple.CoreFoundation 0x00007fff901385b1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
44 com.apple.CoreFoundation 0x00007fff90129c62 __CFRunLoopDoSources0 + 242
45 com.apple.CoreFoundation 0x00007fff901293ef __CFRunLoopRun + 831
46 com.apple.CoreFoundation 0x00007fff90128e75 CFRunLoopRunSpecific + 309
47 com.apple.HIToolbox 0x00007fff9356ea0d RunCurrentEventLoopInMode + 226
48 com.apple.HIToolbox 0x00007fff9356e7b7 ReceiveNextEventCommon + 479
49 com.apple.HIToolbox 0x00007fff9356e5bc _BlockUntilNextEventMatchingListInModeWithFilter + 65
50 com.apple.AppKit 0x00007fff8b69224e _DPSNextEvent + 1434
51 com.apple.AppKit 0x00007fff8b69189b -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 122
52 com.apple.AppKit 0x00007fff8b68599c -[NSApplication run] + 553
53 libqcocoa.dylib 0x000000011179f6bf QCocoaEventDispatcher::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 2143
54 QtCore 0x0000000103c88781 QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 401
55 QtCore 0x0000000103c8cbb5 QCoreApplication::exec() + 341
56 QtWidgets.so 0x0000000105c0a962 meth_QApplication_exec(_object*, _object*) + 82
57 org.python.python 0x000000010006a7b8 _PyCFunction_FastCallDict + 552
58 org.python.python 0x00000001000f4164 call_function + 612
59 org.python.python 0x00000001000f5b74 _PyEval_EvalFrameDefault + 5604
60 org.python.python 0x00000001000f3eae fast_function + 606
61 org.python.python 0x00000001000f414b call_function + 587
62 org.python.python 0x00000001000f5b74 _PyEval_EvalFrameDefault + 5604
63 org.python.python 0x00000001000f3500 _PyEval_EvalCodeWithName + 2720
64 org.python.python 0x00000001000f3d2b fast_function + 219
65 org.python.python 0x00000001000f414b call_function + 587
66 org.python.python 0x00000001000f5b74 _PyEval_EvalFrameDefault + 5604
67 org.python.python 0x00000001000f3500 _PyEval_EvalCodeWithName + 2720
68 org.python.python 0x00000001000f36a4 PyEval_EvalCode + 100
69 org.python.python 0x000000010013000e PyRun_FileExFlags + 206
70 org.python.python 0x00000001001302af PyRun_SimpleFileExFlags + 447
71 org.python.python 0x0000000100149b3a Py_Main + 3914
72 org.python.python 0x0000000100000dfe 0x100000000 + 3582
73 org.python.python 0x0000000100000c34 0x100000000 + 3124