fixup! Save and load example ROIs

Author: mlt

src/main/java/trainableSegmentation/Weka_Segmentation.java

@@ -1038,6 +1038,8 @@ public void windowClosing(WindowEvent e) {
 					saveClassifierButton.removeActionListener(listener);
 					loadDataButton.removeActionListener(listener);
 					saveDataButton.removeActionListener(listener);
+					loadExamplesButton.removeActionListener(listener);
+					saveExamplesButton.removeActionListener(listener);
 					addClassButton.removeActionListener(listener);
 					settingsButton.removeActionListener(listener);
 					wekaButton.removeActionListener(listener);
@@ -1407,13 +1409,10 @@ public void loadExamplesData() {
 				return;
 			}
 
-			for (;numOfClasses < wekaSegmentation.getNumOfClasses(); numOfClasses++)
-				addClass();
-
+			updateAddClassButtons();
 			displayImage.killRoi();
 			drawExamples();
 			updateExampleLists();
-			revalidate();
 
 			IJ.log("Loaded example ROIs " + od.getDirectory() + od.getFileName());
 		}