QApplication exit problem

datafilespage.cpp

DataFilesPage::DataFilesPage(Files::ConfigurationManager &cfg, QWidget *parent)
    : QWidget(parent)
    , mCfgMgr(cfg)
{
    mDataFilesModel = new QStandardItemModel(); // Contains all plugins with masters
    mPluginsModel = new PluginsModel(); // Contains selectable plugins
[...]
    createActions();
    setupConfig();
    setupDataFiles();

}

void DataFilesPage::setupDataFiles()
{
    // We use the Configuration Manager to retrieve the configuration values
    boost::program_options::variables_map variables;
    boost::program_options::options_description desc;

    desc.add_options()
        ("data", boost::program_options::value<Files::PathContainer>()->default_value(Files::PathContainer(), "data")->multitoken())
//        ("data-local", boost::program_options::value<std::string>()->default_value(""))
        ("fs-strict", boost::program_options::value<bool>()->implicit_value(true)->default_value(false))
        ("encoding", boost::program_options::value<std::string>()->default_value("win1252"));

    mCfgMgr.readConfiguration(variables, desc);

    // Put the paths in a boost::filesystem vector to use with Files::Collections
    mDataDirs = Files::PathContainer(variables["data"].as<Files::PathContainer>());

//     std::string local = variables["data-local"].as<std::string>();
//     if (!local.empty()) {
//         mDataLocal.push_back(Files::PathContainer::value_type(local));
//         dataDirs.push_back(Files::PathContainer::value_type(local));
//     }

    if (mDataDirs.size()>1)
        mDataDirs.resize (1);

    mCfgMgr.processPaths(mDataDirs);
    QString selectedDir;

    while (mDataDirs.empty()) {
        QMessageBox msgBox;
        msgBox.setWindowTitle("Error detecting Morrowind installation");
        msgBox.setIcon(QMessageBox::Warning);
        msgBox.setStandardButtons(QMessageBox::Cancel);
        msgBox.setText(tr("<br><b>Could not find the Data Files location</b><br><br> \
                          The directory containing the data files was not found.<br><br> \
                          Press \"Browse...\" to specify the location manually.<br>"));

        QAbstractButton *dirSelectButton =
                msgBox.addButton(tr("B&rowse..."), QMessageBox::ActionRole);

        msgBox.exec();

        if (msgBox.clickedButton() == dirSelectButton) {

            // Show a custom dir selection dialog which only accepts valid dirs
            selectedDir = FileDialog::getExistingDirectory(
                        this, tr("Select Data Files Directory"),
                        QDir::currentPath(),
                        QFileDialog::ShowDirsOnly | QFileDialog::DontResolveSymlinks);

            // Add the user selected data directory
            if (!selectedDir.isEmpty()) {
                mDataDirs.push_back(Files::PathContainer::value_type(selectedDir.toStdString()));
                mCfgMgr.processPaths(mDataDirs);
            } else {
                // Cancel from within the dir selection dialog
                qDebug() << "breakage!";
                break;
            }

        } else {
            // Cancel
            break;
        }
    }

    qDebug() << "selecteddir is " << selectedDir;

    >>> THIS IS WHERE IT WON'T QUIT <<<
    // Check if cancel was clicked because we can't exit from while loop
    if (selectedDir.isEmpty()) {
        qDebug() << "quit please";
        QCoreApplication::exit(1);
        return;
    }
[...]
}

void DataFilesPage::writeConfig(QString profile)
{
    // Don't overwrite the config if no masters are found
    if (mMastersWidget->rowCount() < 1) {
        return;
    }

    QString pathStr = QString::fromStdString(mCfgMgr.getUserPath().string());
    QDir userPath(pathStr);

    >>> THIS IS WHERE IT DOES (function called from MainDialog) <<<
    if (!userPath.exists()) {
        if (!userPath.mkpath(pathStr)) {
            QMessageBox msgBox;
            msgBox.setWindowTitle("Error creating OpenMW configuration directory");
            msgBox.setIcon(QMessageBox::Critical);
            msgBox.setStandardButtons(QMessageBox::Ok);
            msgBox.setText(tr("<br><b>Could not create %0</b><br><br> \
                              Please make sure you have the right permissions and try again.<br>").arg(pathStr));
            msgBox.exec();

            qApp->exit(1);
            return;
        }
    }
[...]
}