diff --git a/prism/images/smallItemSelectedDisabled.png b/prism/images/smallItemSelectedDisabled.png
new file mode 100644
index 00000000..70f5367e
Binary files /dev/null and b/prism/images/smallItemSelectedDisabled.png differ
diff --git a/prism/src/userinterface/simulator/GUISimulator.java b/prism/src/userinterface/simulator/GUISimulator.java
index d9a9bf38..dc792d8d 100644
--- a/prism/src/userinterface/simulator/GUISimulator.java
+++ b/prism/src/userinterface/simulator/GUISimulator.java
@@ -132,7 +132,7 @@ public class GUISimulator extends GUIPlugin implements MouseListener, ListSelect
 					currentUpdatesTable.requestFocus();
 				} else if (e.getClickCount() == 2 && !currentUpdatesTable.isEnabled()) {
 					GUISimulator.this.warning("Simulation",
-							"You cannot continue exploration from the state that is current selected.\nSelect the last state in the path table to continue");
+							"These are updates from earlier in the path.\nSelect the last state in the path table to continue exploration");
 				}
 			}
 		});
@@ -928,6 +928,7 @@ public class GUISimulator extends GUIPlugin implements MouseListener, ListSelect
 		typeBacktrackCombo.setEnabled(pathActive);
 
 		currentUpdatesTable.setEnabled(pathActive && !computing);
+		currentUpdatesTable.setToolTipText(currentUpdatesTable.isEnabled() ? "Double click on an update to manually execute it" : null);
 		autoTimeCheck.setEnabled(pathActive && parsedModel != null && parsedModel.getModelType().continuousTime());
 
 		//resetPathButton.setEnabled(pathActive && !computing);
@@ -938,8 +939,6 @@ public class GUISimulator extends GUIPlugin implements MouseListener, ListSelect
 		//newPathFromState.setEnabled(parsedModel != null && !computing);
 		//newPathButton.setEnabled(parsedModel != null && !computing);
 
-		currentUpdatesTable.setEnabled(pathActive);
-
 		modelType.setEnabled(parsedModel != null);
 		modelTypeLabel.setEnabled(parsedModel != null);
 
@@ -1363,7 +1362,6 @@ public class GUISimulator extends GUIPlugin implements MouseListener, ListSelect
 		manualUpdateTableScrollPane.setBorder(javax.swing.BorderFactory.createEmptyBorder(0, 0, 0, 0));
 		currentUpdatesTable.setModel(new javax.swing.table.DefaultTableModel(new Object[][] { { null, null, null, null }, { null, null, null, null },
 				{ null, null, null, null }, { null, null, null, null } }, new String[] { "Title 1", "Title 2", "Title 3", "Title 4" }));
-		currentUpdatesTable.setToolTipText("Double click on an update to manually execute the update");
 		manualUpdateTableScrollPane.setViewportView(currentUpdatesTable);
 
 		innerManualUpdatesPanel.add(manualUpdateTableScrollPane, java.awt.BorderLayout.CENTER);
@@ -2193,6 +2191,7 @@ public class GUISimulator extends GUIPlugin implements MouseListener, ListSelect
 			fireTableDataChanged();
 
 			currentUpdatesTable.setEnabled(true);
+			currentUpdatesTable.setToolTipText("Double click on an update to manually execute it");
 
 			if (getRowCount() > 0) {
 				currentUpdatesTable.getSelectionModel().setSelectionInterval(0, 0);
@@ -2215,6 +2214,7 @@ public class GUISimulator extends GUIPlugin implements MouseListener, ListSelect
 				fireTableDataChanged();
 
 				currentUpdatesTable.setEnabled(false);
+				currentUpdatesTable.setToolTipText(null);
 
 				if (getRowCount() > 0) {
 					int selectThis = engine.getChoiceOfPathStep(oldStep);
diff --git a/prism/src/userinterface/simulator/GUISimulatorUpdatesTable.java b/prism/src/userinterface/simulator/GUISimulatorUpdatesTable.java
index c97e304d..7866853f 100644
--- a/prism/src/userinterface/simulator/GUISimulatorUpdatesTable.java
+++ b/prism/src/userinterface/simulator/GUISimulatorUpdatesTable.java
@@ -203,12 +203,11 @@ public class GUISimulatorUpdatesTable extends JTable implements ListSelectionLis
 	class UpdateHeaderRenderer extends JButton implements ListCellRenderer
 	{
 
-		boolean selected;
 		ImageIcon selectedIcon;
+		ImageIcon selectedDisabledIcon;
 
 		UpdateHeaderRenderer(JTable table)
 		{
-			selected = false;
 			/*JTableHeader header = table.getTableHeader();
 			 setOpaque(true);
 			 setBorder(UIManager.getBorder("TableHeader.cellBorder"));
@@ -218,20 +217,20 @@ public class GUISimulatorUpdatesTable extends JTable implements ListSelectionLis
 			 setFont(header.getFont());*/
 			setBorder(null);
 			selectedIcon = GUIPrism.getIconFromImage("smallItemSelected.png");
+			selectedDisabledIcon = GUIPrism.getIconFromImage("smallItemSelectedDisabled.png");
 		}
 
 		public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus)
 		{
-
 			setBorder(null);
-			selected = getSelectedRow() == index;
-
-			if (selected) {
-				setIcon(selectedIcon);
+			if (getSelectedRow() == index) {
+				if (GUISimulatorUpdatesTable.this.isEnabled())
+					setIcon(selectedIcon);
+				else
+					setIcon(selectedDisabledIcon);
 			} else {
 				setIcon(null);
 			}
-
 			return this;
 		}