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.

/**
  Bitcoin GUI main class. This class represents the main window of the Bitcoin UI. It communicates with both the client and
  wallet models to give the user an up-to-date view of the current core state.
*/
class BitcoinGUI : public QMainWindow
{
    Q_OBJECT
public:
    static const QString DEFAULT_WALLET;
    static const std::string DEFAULT_UIPLATFORM;
    explicit BitcoinGUI(const PlatformStyle *platformStyle, const NetworkStyle *networkStyle, QWidget *parent = 0);
    ~BitcoinGUI();
    /** Set the client model.
        The client model represents the part of the core that communicates with the P2P network, and is wallet-agnostic.
    */
    void setClientModel(ClientModel *clientModel);
#ifdef ENABLE_WALLET
    /** Set the wallet model.
        The wallet model represents a bitcoin wallet, and offers access to the list of transactions, address book and sending
        functionality.
    */
    bool addWallet(const QString& name, WalletModel *walletModel);
    bool setCurrentWallet(const QString& name);
    void removeAllWallets();
#endif 
    bool enableWallet;
protected:
    void changeEvent(QEvent *e);
    void closeEvent(QCloseEvent *event);
    void dragEnterEvent(QDragEnterEvent *event);