diff --git a/extras/audio plugin host/Source/MainHostWindow.cpp b/extras/audio plugin host/Source/MainHostWindow.cpp
index c816af8d6e..e1d3c858c7 100644
--- a/extras/audio plugin host/Source/MainHostWindow.cpp	
+++ b/extras/audio plugin host/Source/MainHostWindow.cpp	
@@ -116,6 +116,8 @@ MainHostWindow::MainHostWindow()
    #else
     setMenuBar (this);
    #endif
+
+    commandManager->setFirstCommandTarget (this);
 }
 
 MainHostWindow::~MainHostWindow()
diff --git a/modules/juce_audio_plugin_client/AU/juce_AU_Wrapper.mm b/modules/juce_audio_plugin_client/AU/juce_AU_Wrapper.mm
index 1b17ddaea3..2291f88d57 100644
--- a/modules/juce_audio_plugin_client/AU/juce_AU_Wrapper.mm
+++ b/modules/juce_audio_plugin_client/AU/juce_AU_Wrapper.mm
@@ -564,7 +564,7 @@ public:
 
     void audioProcessorChanged (AudioProcessor*)
     {
-        // xxx is there an AU equivalent?
+        PropertyChanged (kAudioUnitProperty_Latency, kAudioUnitScope_Global, 0);
     }
 
     bool StreamFormatWritable (AudioUnitScope, AudioUnitElement)
diff --git a/modules/juce_audio_processors/scanning/juce_PluginListComponent.cpp b/modules/juce_audio_processors/scanning/juce_PluginListComponent.cpp
index 725e16e2cc..07378a3c9a 100644
--- a/modules/juce_audio_processors/scanning/juce_PluginListComponent.cpp
+++ b/modules/juce_audio_processors/scanning/juce_PluginListComponent.cpp
@@ -260,9 +260,14 @@ private:
         aw.setMessage (TRANS("Testing:\n\n") + scanner.getNextPluginFileThatWillBeScanned());
 
         if (scanner.scanNextFile (true) && aw.isCurrentlyModal())
+        {
             progress = scanner.getProgress();
+            startTimer (20);
+        }
         else
+        {
             owner.scanFinished (scanner.getFailedFiles());
+        }
     }
 
     PluginListComponent& owner;