diff --git a/source/carla_backend.py b/source/carla_backend.py
index 9aa2ebd30..df3b3c565 100644
--- a/source/carla_backend.py
+++ b/source/carla_backend.py
@@ -1187,12 +1187,12 @@ PyCarlaPluginInfo = {
     'hints': 0x0,
     'optionsAvailable': 0x0,
     'optionsEnabled': 0x0,
-    'filename': None,
-    'name':  None,
-    'label': None,
-    'maker': None,
-    'copyright': None,
-    'iconName': None,
+    'filename': "",
+    'name':  "",
+    'label': "",
+    'maker': "",
+    'copyright': "",
+    'iconName': "",
     'uniqueId': 0
 }
 
@@ -1206,10 +1206,10 @@ PyCarlaNativePluginInfo = {
     'midiOuts': 0,
     'parameterIns': 0,
     'parameterOuts': 0,
-    'name':  None,
-    'label': None,
-    'maker': None,
-    'copyright': None
+    'name':  "",
+    'label': "",
+    'maker': "",
+    'copyright': ""
 }
 
 # @see CarlaPortCountInfo
@@ -1220,16 +1220,16 @@ PyCarlaPortCountInfo = {
 
 # @see CarlaParameterInfo
 PyCarlaParameterInfo = {
-    'name': None,
-    'symbol': None,
-    'unit': None,
+    'name': "",
+    'symbol': "",
+    'unit': "",
     'scalePointCount': 0,
 }
 
 # @see CarlaScalePointInfo
 PyCarlaScalePointInfo = {
     'value': 0.0,
-    'label': None
+    'label': ""
 }
 
 # @see CarlaTransportInfo
@@ -2022,10 +2022,10 @@ class CarlaHostNull(CarlaHostMeta):
         return text
 
     def get_juce_version(self):
-        return ""
+        return "3.0"
 
     def get_supported_file_extensions(self):
-        return ""
+        return "*.carxp;*.carxs;*.mid;*.midi;*.sf2;*.gig;*.sfz;*.xmz;*.xiz"
 
     def get_engine_driver_count(self):
         return 0
diff --git a/source/carla_widgets.py b/source/carla_widgets.py
index 441dcac96..256a8ff43 100755
--- a/source/carla_widgets.py
+++ b/source/carla_widgets.py
@@ -410,8 +410,13 @@ class PluginEditParentMeta():
 # Plugin Editor (Built-in)
 
 class PluginEdit(QDialog):
+    # settings
     kParamsPerPage = 8
 
+    # signals
+    SIGTERM = pyqtSignal()
+    SIGUSR1 = pyqtSignal()
+
     def __init__(self, parent, host, pluginId):
         QDialog.__init__(self, parent.window() if parent is not None else None)
         self.host = host
@@ -698,8 +703,8 @@ class PluginEdit(QDialog):
         self.ui.le_unique_id.setText(str(self.fPluginInfo['uniqueId']))
         self.ui.le_unique_id.setToolTip(str(self.fPluginInfo['uniqueId']))
 
-        self.ui.label_plugin.setText("\n%s\n" % self.fPluginInfo['name'])
-        self.setWindowTitle(self.fPluginInfo['name'])
+        self.ui.label_plugin.setText("\n%s\n" % (self.fPluginInfo['name'] or "(none)"))
+        self.setWindowTitle(self.fPluginInfo['name'] or "(none)")
 
         self.ui.dial_drywet.setEnabled(pluginHints & PLUGIN_CAN_DRYWET)
         self.ui.dial_vol.setEnabled(pluginHints & PLUGIN_CAN_VOLUME)
@@ -1520,6 +1525,14 @@ class PluginEdit(QDialog):
     def testTimer(self):
         self.fIdleTimerId = self.startTimer(50)
 
+        self.SIGTERM.connect(self.testTimerClose)
+        gCarla.gui = self
+        setUpSignals()
+
+    def testTimerClose(self):
+        self.close()
+        app.quit()
+
     #------------------------------------------------------------------
 
     def closeEvent(self, event):