MacPorts-installed Bitcoin Core's version v0.12.1.0g9779e1e crashes on OSX when trying to open the debug window while the app is verifying the blocks at startup.

{
    QString strTitle = tr("Bitcoin"); 
    
    int nMBoxIcon = QMessageBox::Information;
    int nNotifyIcon = Notificator::Information;
    QString msgType;
    
    if (!title.isEmpty()) {
        msgType = title;
    }
    else {
        switch (style) {
        case CClientUIInterface::MSG_ERROR:
            msgType = tr("Error");
            break;
        case CClientUIInterface::MSG_WARNING:
            msgType = tr("Warning");
            break;
        case CClientUIInterface::MSG_INFORMATION:
            msgType = tr("Information");
            break;
        default:
            break;