diff --git a/intervalmusiccompositor.fxUi/src/main/java/ch/retorte/intervalmusiccompositor/ui/IntervalMusicCompositorUI.java b/intervalmusiccompositor.fxUi/src/main/java/ch/retorte/intervalmusiccompositor/ui/IntervalMusicCompositorUI.java
index e709254..bdc0cb2 100644
--- a/intervalmusiccompositor.fxUi/src/main/java/ch/retorte/intervalmusiccompositor/ui/IntervalMusicCompositorUI.java
+++ b/intervalmusiccompositor.fxUi/src/main/java/ch/retorte/intervalmusiccompositor/ui/IntervalMusicCompositorUI.java
@@ -86,7 +86,7 @@ public IntervalMusicCompositorUI(final MusicListControl musicListControl,
 
   private void installUncaughtExceptionHandler() {
     Thread.setDefaultUncaughtExceptionHandler((thread, throwable) -> {
-      messageProducer.send(new ErrorMessage(throwable.getMessage()));
+      messageProducer.send(new ErrorMessage(throwable));
       messageProducer.send(new DebugMessage(IntervalMusicCompositorUI.this, throwable));
     });
   }
diff --git a/intervalmusiccompositor.fxUi/src/main/java/ch/retorte/intervalmusiccompositor/ui/mainscreen/MainScreenController.java b/intervalmusiccompositor.fxUi/src/main/java/ch/retorte/intervalmusiccompositor/ui/mainscreen/MainScreenController.java
index 6c35ff0..f31a3df 100644
--- a/intervalmusiccompositor.fxUi/src/main/java/ch/retorte/intervalmusiccompositor/ui/mainscreen/MainScreenController.java
+++ b/intervalmusiccompositor.fxUi/src/main/java/ch/retorte/intervalmusiccompositor/ui/mainscreen/MainScreenController.java
@@ -506,7 +506,7 @@ private void showErrorMessage(String message) {
       Alert alert = new Alert(Alert.AlertType.ERROR);
       alert.setResizable(true);
       alert.setTitle(bundle.getString("ui.error.title"));
-      alert.setContentText(message);
+      alert.setContentText(message + "\n\n" + bundle.getString("ui.error.appendix"));
       alert.getDialogPane().getChildren().stream().filter(node -> node instanceof Label).forEach(node -> ((Label)node).setMinHeight(Region.USE_PREF_SIZE));
       alert.show();
     });
diff --git a/intervalmusiccompositor.fxUi/src/main/resources/ui_imc_de.properties b/intervalmusiccompositor.fxUi/src/main/resources/ui_imc_de.properties
index df89843..5919240 100644
--- a/intervalmusiccompositor.fxUi/src/main/resources/ui_imc_de.properties
+++ b/intervalmusiccompositor.fxUi/src/main/resources/ui_imc_de.properties
@@ -4,6 +4,7 @@ ui.instructions = Ziehe Musikdateien (der unterstützten Formate MP3, OGG, FLAC,
 
 # Error stuff
 ui.error.title = Interval Music Compositor - Fehler
+ui.error.appendix = (Siehe unter "Hilfe" -> "Ereignisanzeige" für Details.)
 
 # About box
 ui.about.title = Über
diff --git a/intervalmusiccompositor.fxUi/src/main/resources/ui_imc_en.properties b/intervalmusiccompositor.fxUi/src/main/resources/ui_imc_en.properties
index b93e4e8..49a3eec 100644
--- a/intervalmusiccompositor.fxUi/src/main/resources/ui_imc_en.properties
+++ b/intervalmusiccompositor.fxUi/src/main/resources/ui_imc_en.properties
@@ -3,6 +3,7 @@ ui.instructions = Drag and drop music files (supported formats: MP3, OGG, FLAC,
 
 # Error stuff
 ui.error.title = IntervalMusicCompositor - Error
+ui.error.appendix = (See "Help" -> "Debug log" for more information.)
 
 # About box
 ui.about.title = About
diff --git a/intervalmusiccompositor.model/src/main/java/ch/retorte/intervalmusiccompositor/messagebus/ErrorMessage.java b/intervalmusiccompositor.model/src/main/java/ch/retorte/intervalmusiccompositor/messagebus/ErrorMessage.java
index 915bbfa..a6ba43f 100644
--- a/intervalmusiccompositor.model/src/main/java/ch/retorte/intervalmusiccompositor/messagebus/ErrorMessage.java
+++ b/intervalmusiccompositor.model/src/main/java/ch/retorte/intervalmusiccompositor/messagebus/ErrorMessage.java
@@ -9,4 +9,18 @@ public ErrorMessage(String message) {
     super(message);
   }
 
+  public ErrorMessage(Throwable throwable) {
+    super(getMessageFrom(throwable));
+  }
+
+  private static String getMessageFrom(Throwable throwable) {
+    String message = throwable.getMessage();
+    if (message != null) {
+      return message;
+    }
+    else {
+      return throwable.getClass().getSimpleName();
+    }
+  }
+
 }