Fixed #173 - non running server leads to wrong server version alert

src/de/deadlocker8/budgetmaster/ui/controller/Controller.java

@@ -291,7 +291,7 @@ public class Controller extends BaseController
 				
 				Stage dialogStage = (Stage)alert.getDialogPane().getScene().getWindow();
 				dialogStage.getIcons().add(icon);
-				dialogStage.initOwner(parentStage);
+				dialogStage.initOwner(getStage());
 				alert.showAndWait();
 				alertIsShowing = false;
 			});
@@ -385,7 +385,7 @@ public class Controller extends BaseController
 				Optional<ButtonType> result = alert.showAndWait();						
 				if (result.get() == buttonTypeOne)
 				{					
-					Stage modalStage = Helpers.showModal(Localization.getString(Strings.TITLE_MODAL), Localization.getString(Strings.LOAD_UPDATE), parentStage, icon);
+					Stage modalStage = Helpers.showModal(Localization.getString(Strings.TITLE_MODAL), Localization.getString(Strings.LOAD_UPDATE), getStage(), icon);
 					
 					Worker.runLater(() -> {
 						try 
@@ -451,7 +451,7 @@ public class Controller extends BaseController
 	
 	public void refresh(FilterSettings newFilterSettings)
 	{
-		Stage modalStage = Helpers.showModal(Localization.getString(Strings.TITLE_MODAL), Localization.getString(Strings.LOAD_DATA), parentStage, icon);
+		Stage modalStage = Helpers.showModal(Localization.getString(Strings.TITLE_MODAL), Localization.getString(Strings.LOAD_DATA), getStage(), icon);
 
 		Worker.runLater(() -> {
 			try
@@ -484,6 +484,11 @@ public class Controller extends BaseController
 				}
 				catch(Exception e1)
 				{
+					Logger.error(e1);
+					
+					if(e1.getMessage().contains("404"))
+					{
+						//old server
 						Platform.runLater(()->{
 							AlertGenerator.showAlert(AlertType.WARNING,
 							Localization.getString(Strings.TITLE_WARNING), 
@@ -499,6 +504,12 @@ public class Controller extends BaseController
 							toggleAllTabsExceptSettings(true);
 							tabPane.getSelectionModel().select(tabSettings);
 						});
+					}
+					else
+					{
+						//normal connection error (e.g. server not running)
+						showConnectionErrorAlert(ExceptionHandler.getMessageForException(e1));
+					}
 					return;
 				}