diff --git a/src/ATBAPP/ATBVMCPlugin.cpp b/src/ATBAPP/ATBVMCPlugin.cpp
index 25b3ff0..9b0b61c 100644
--- a/src/ATBAPP/ATBVMCPlugin.cpp
+++ b/src/ATBAPP/ATBVMCPlugin.cpp
@@ -31,6 +31,13 @@ ATBVMCPlugin::~ATBVMCPlugin() {
     }
 }
 
+QString const &ATBVMCPlugin::getPluginInfo() {
+    return m_pluginInfo;
+}
+
+void ATBVMCPlugin::setPluginInfo(QString const &info) {
+    m_pluginInfo = info;
+}
 
 // ----------------------------------------------------------------------------
 // interface:
@@ -38,45 +45,46 @@ PLUGIN_STATE ATBVMCPlugin::initVMCPlugin(QObject *appControl,
                                          QObject *atbSystem,
                                          QObject *hmiConfig,
                                          QSettings const &settings) {
+    if (appControl && atbSystem && hmiConfig) {
+        m_vmc = new VMC(appControl, &settings);
 
-    m_vmc = new VMC(appControl, &settings);
+        // -------------------- connect vmc --------------------------------------------
+        connect(m_vmc, SIGNAL(VMCFormatedString(FormatedStringList)), appControl, SLOT(onVMCFormatedString(FormatedStringList)), Qt::QueuedConnection);
+        connect(m_vmc, SIGNAL(displayData(quint8,QString)), appControl, SLOT(onVMCSellData(quint8,QString)), Qt::QueuedConnection);
+        connect(m_vmc, SIGNAL(retriggerModeSell()), appControl, SLOT(restartSellModeTimeoutTimer()), Qt::QueuedConnection);
+        connect(m_vmc, SIGNAL(setVendingData(QString,QByteArray)), appControl, SLOT(onSetVendingData(QString,QByteArray)), Qt::QueuedConnection);
 
-    // -------------------- connect vmc --------------------------------------------
-    connect(m_vmc, SIGNAL(VMCFormatedString(FormatedStringList)), appControl, SLOT(onVMCFormatedString(FormatedStringList)), Qt::QueuedConnection);
-    connect(m_vmc, SIGNAL(displayData(quint8,QString)), appControl, SLOT(onVMCSellData(quint8,QString)), Qt::QueuedConnection);
-    connect(m_vmc, SIGNAL(retriggerModeSell()), appControl, SLOT(restartSellModeTimeoutTimer()), Qt::QueuedConnection);
-    connect(m_vmc, SIGNAL(setVendingData(QString,QByteArray)), appControl, SLOT(onSetVendingData(QString,QByteArray)), Qt::QueuedConnection);
+        connect(m_vmc, SIGNAL(sysCommand(quint16, QByteArray)), atbSystem, SLOT(executeSystemCommand(quint16, QByteArray)), Qt::QueuedConnection);
+        connect(m_vmc, SIGNAL(newDateTime(QString)), atbSystem, SLOT(setDateTime(QString)), Qt::QueuedConnection);
+        connect(m_vmc, SIGNAL(wakeVMC()), atbSystem, SLOT(onWakeVMC()));
 
-    connect(m_vmc, SIGNAL(sysCommand(quint16, QByteArray)), atbSystem, SLOT(executeSystemCommand(quint16, QByteArray)), Qt::QueuedConnection);
-    connect(m_vmc, SIGNAL(newDateTime(QString)), atbSystem, SLOT(setDateTime(QString)), Qt::QueuedConnection);
-    connect(m_vmc, SIGNAL(wakeVMC()), atbSystem, SLOT(onWakeVMC()));
+        connect(m_vmc, SIGNAL(setCustNr(QString)), hmiConfig, SLOT(setCustNr(QString)), Qt::QueuedConnection);
+        connect(m_vmc, SIGNAL(setGroupNr(QString)), hmiConfig, SLOT(setGroupNr(QString)), Qt::QueuedConnection);
+        connect(m_vmc, SIGNAL(setZoneNr(QString)), hmiConfig, SLOT(setZoneNr(QString)), Qt::QueuedConnection);
+        connect(m_vmc, SIGNAL(setMachineNr(QString)), hmiConfig, SLOT(setMachineNr(QString)), Qt::QueuedConnection);
+        connect(m_vmc, SIGNAL(setDefaultLanguage(quint8)), hmiConfig, SLOT(setDefaultLanguage(quint8)), Qt::QueuedConnection);
 
-    connect(m_vmc, SIGNAL(setCustNr(QString)), hmiConfig, SLOT(setCustNr(QString)), Qt::QueuedConnection);
-    connect(m_vmc, SIGNAL(setGroupNr(QString)), hmiConfig, SLOT(setGroupNr(QString)), Qt::QueuedConnection);
-    connect(m_vmc, SIGNAL(setZoneNr(QString)), hmiConfig, SLOT(setZoneNr(QString)), Qt::QueuedConnection);
-    connect(m_vmc, SIGNAL(setMachineNr(QString)), hmiConfig, SLOT(setMachineNr(QString)), Qt::QueuedConnection);
-    connect(m_vmc, SIGNAL(setDefaultLanguage(quint8)), hmiConfig, SLOT(setDefaultLanguage(quint8)), Qt::QueuedConnection);
+        return PLUGIN_STATE::INITIALIZED;
+    }
 
-    return PLUGIN_STATE::INITIALIZED;
+    return PLUGIN_STATE::NOT_INITIALIZED;
 }
 
 // mandantory ATBAPP plugin methods: ------------------------------------------
 PLUGIN_STATE ATBVMCPlugin::getState() {
-    return PLUGIN_STATE::NOT_INITIALIZED;
+    return m_pluginState;
 }
 
 QString ATBVMCPlugin::getLastError() {
-    return "";
+    return m_errorCode;
 }
 
 QString ATBVMCPlugin::getLastErrorDescription() {
-    return "";
+    return m_errorDescription;
 }
 
-QString const &ATBVMCPlugin::getPluginInfo() {
-    static QString info;
-    return info;
-}
+
+#if 0
 
 // helpers e.g. for debug / log
 QString ATBVMCPlugin::getString(RESULT_STATE /*resultState*/) {
@@ -114,3 +122,9 @@ void ATBVMCPlugin::reboot() {
 void ATBVMCPlugin::reset() {
 
 }
+
+#endif
+
+#if QT_VERSION < 0x050000
+Q_EXPORT_PLUGIN2(ATBVMCPlugin, ATBVMCPlugin)
+#endif