Qwizard crashed when created in a slot

[joshlareau]

I'm trying to use the QWizard class introduced in Qt4.3.0 but whenever I try to create my QWizard derived class in a slot, I get an access violation deep in the Qt library:

qwizard_win.cpp

bool QVistaHelper::handleWinEvent(MSG *message, long *result)
{
    bool status = false;
    if (wizard->wizardStyle() == QWizard::AeroStyle) {
        status = winEvent(message, result);
        if (message->message == WM_NCCALCSIZE) {
            if (status)
                collapseTopFrameStrut();
        } else if (message->message == WM_NCPAINT) {
            wizard->update();
        }
    }
    return status;
}

bool QVistaHelper::handleWinEvent(MSG *message, long *result)
{
    bool status = false;
    if (wizard->wizardStyle() == QWizard::AeroStyle) {
        status = winEvent(message, result);
        if (message->message == WM_NCCALCSIZE) {
            if (status)
                collapseTopFrameStrut();
        } else if (message->message == WM_NCPAINT) {
            wizard->update();
        }
    }
    return status;
}

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It appears as if the wizard pointer is no longer valid. Here is my calling code:

void MyApp::testSlot()
{
	NewProjectWizard* projwizard = new NewProjectWizard( this );
	projwizard->show();
}

void MyApp::testSlot()
{
	NewProjectWizard* projwizard = new NewProjectWizard( this );
	projwizard->show();
}

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This code works fine anywhere but in a connected slot. Has anyone else experienced this? Could someone else test this and see if I'm crazy? I have Qt 4.3.0 compiled for Microsft Visual Studio 2005 installed and I'm running Windows XP, not Vista. Maybe Qt4.3.1 fixes this problem but I didn't see anything in the change log. Any help would be appreciated, thanks.