QWebView works in QT4.8, Appears to hang or infinite loop, then crashes, in QT5.0.2 MinGw version

I have a QWebView that opens a local web page on my computer, and everything works perfectly in Qt4.8. (It also works with a browser). But after porting the software to Qt5.0.2 (and making the change from QWebView to QtWebKitWidgets/QWebView, the program appears to hang, then crashes with the following output:

QIODevice::read: maxSize argument exceeds QByteArray size limit.
terminate called after throwing an instance of ‘std::bad_alloc’
what(): std::bad_alloc

Here’s the code:

HelpManager::HelpManager(QObject *parent) :
QObject(parent)

{ view = new QWebView(); connect (view, SIGNAL(loadStarted()), SLOT(loadIsStarted())); connect (view, SIGNAL(loadProgress(int)), SLOT(loadInProgress(int))); connect (view, SIGNAL(loadFinished(bool)), SLOT(loadIsFinisehd(bool))); view->load(QUrl("../Help/IDTNVMeMgr-web/index.html")); view->setWindowTitle("IDTVMeMgr Help Information"); view->show(); }

void HelpManager::loadIsStarted()

{ qDebug() << "loadIsStarted"; }

void HelpManager::loadInProgress(int progress)

{ qDebug() << "loadInProgress, progress =" << progress; }

void HelpManager::loadIsFinisehd(bool isOk)

{ qDebug() << "loadIsFinshed, status = " << isOk; }

Here is the successful output using Qt4.8

loadIsStarted
loadInProgress, progress = 10
loadInProgress, progress = 10
loadInProgress, progress = 27
loadInProgress, progress = 29
loadInProgress, progress = 32
loadInProgress, progress = 36
loadInProgress, progress = 36
loadInProgress, progress = 36
loadInProgress, progress = 90
loadInProgress, progress = 90
loadInProgress, progress = 90
loadInProgress, progress = 90
loadInProgress, progress = 90
loadInProgress, progress = 100
loadIsFinshed, status = true