CrashFix

src/main/java/de/hhu/ba/yoshikoWrapper/graphModel/YoshikoCluster.java

@@ -176,9 +176,11 @@ public class YoshikoCluster {
 
 	public void delete() {
 		if (subnet != null) {
+			if (CyCore.networkManager.networkExists(subnet.hashCode())) {
 				CyCore.networkManager.destroyNetwork(subnet);
 			}
 		}
+	}
 
 	public int getSize() {
 		return nodes.size();

src/main/java/de/hhu/ba/yoshikoWrapper/swing/components/ResultPanel.java

@@ -161,7 +161,7 @@ NetworkAboutToBeDestroyedListener
 
 			@Override
 			public void actionPerformed(ActionEvent e) {
-				deleteSolution();
+				deleteResult();
 			}
 
 		});
@@ -214,7 +214,7 @@ NetworkAboutToBeDestroyedListener
 		CyCore.registrar.registerService(this, NetworkAboutToBeDestroyedListener.class, new Properties());
 	}
 
-	public void deleteSolution() {
+	public void deleteResult() {
 
 		int dialogResult = JOptionPane.showConfirmDialog (
 				null,

src/main/java/de/hhu/ba/yoshikoWrapper/tasks/AlgorithmTask.java

@@ -282,7 +282,7 @@ public class AlgorithmTask extends AbstractTask implements ObservableTask {
 		}
 		//Delete (incomplete) c_result panel
 		if (resultPanel != null) {
-			resultPanel.deleteSolution();
+			resultPanel.deleteResult();
 		}
 		super.cancel();
 	}