diff --git a/plugins/XPSSpectrum.java b/plugins/XPSSpectrum.java
index d6171b7a..f0a290a7 100644
--- a/plugins/XPSSpectrum.java
+++ b/plugins/XPSSpectrum.java
@@ -14,7 +14,6 @@ import ch.psi.utils.IO;
 import ch.psi.utils.Serializer;
 import ch.psi.utils.State;
 import ch.psi.utils.swing.SwingUtils;
-import ch.psi.psaf.Task;
 import ch.psi.pshell.swing.ValueSelection;
 import java.awt.Component;
 import java.io.File;
@@ -22,10 +21,9 @@ import java.nio.file.Files;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
-import javax.swing.JCheckBox;
+import java.util.logging.Level;
 import javax.swing.JComboBox;
 import javax.swing.JFileChooser;
-import javax.swing.JSpinner;
 import javax.swing.JToggleButton;
 import javax.swing.SwingUtilities;
 import javax.swing.event.TableModelEvent;
@@ -92,8 +90,7 @@ public class XPSSpectrum extends Panel {
         if (!state.isProcessing()){
             buttonSkip.setVisible(false);
             if (running){
-                monitoringTask.stop();
-                monitoringTask.stopScheduler();
+                stopTimer();
                 running = false;
                 getView().getStatusBar().setProgress(-1); 
             }
@@ -167,10 +164,10 @@ public class XPSSpectrum extends Panel {
     public final String CURRERNT_ITERATION_VAR =  "cur_iteration";
     int currentScanIndex ;
     RangeSelection[] scanRanges;
-            
-    Task monitoringTask = new Task() {
-        @Override
-        protected Object execute() throws Exception {
+
+    @Override
+    protected void onTimer() {
+        try{
             Object index = XPSSpectrum.this.eval(CURRERNT_RANGE_VAR, true);
             if ((index!=null) && (index instanceof Integer) && ((Integer)index >= 0)){
                 int scanIndex = (Integer)index;
@@ -178,12 +175,12 @@ public class XPSSpectrum extends Panel {
                     buttonSkip.setEnabled(true);
                 }
                 currentScanIndex = scanIndex;
-                
+
                 int current_iteration = (Integer) XPSSpectrum.this.eval(CURRERNT_ITERATION_VAR, true);
                 int iterations = (Integer)scanRanges[currentScanIndex].getVars()[2];
-    
+
                 buttonSkip.setVisible((iterations>1) && (current_iteration < (iterations-1)));                
-                
+
                 if (detailedScan){
                     RangeSelection range = rangeSelectionPanel.getRangesOrdered()[scanIndex];                
                     for (int row = 0; row< rangeSelectionPanel.getTable().getRowCount(); row++){
@@ -199,21 +196,20 @@ public class XPSSpectrum extends Panel {
             } else {
                 rangeSelectionPanel.getTable().clearSelection();
             }
-            
-            return true;
+        } catch (Exception ex){
+            getLogger().log(Level.FINE, null, ex);
         }
-    };    
+    }
     
     void start() throws Controller.ControllerStateException{
             HashMap<String, Object> args = new HashMap<>();
             args.put("ranges", scanRanges);
             args.put("pass_energy", Integer.valueOf(comboPass.getSelectedItem().toString()));    
             args.put("save_scienta_image", checkSaveImage.isSelected());            
-            args.put("ENDSCAN", checkEndScan.isSelected());                
-                        
+            args.put("ENDSCAN", checkEndScan.isSelected());                                        
             currentScanIndex = -1;
             runAsync("XPSSpectrum", args);
-            monitoringTask.schedule(100, 500);
+            startTimer(500);
             running = true;        
     }
     
diff --git a/script/XPSSpectrum.py b/script/XPSSpectrum.py
index 425f3210..ed656f6f 100644
--- a/script/XPSSpectrum.py
+++ b/script/XPSSpectrum.py
@@ -60,11 +60,11 @@ try:
         for cur_iteration in range(vars[2]):   
             plots[cur_range+1].setTitle(str(ranges[cur_range]) + " - iteration " + str(cur_iteration+1))
             while True:
-                wait_beam()
+                #wait_beam()
                 trig_scienta()
                 spectrum_array = Scienta.spectrum.read()                
                 spectrum_array[0]=10
-                if beam_ok:
+                if True:#beam_ok:
                     break
             if ydata is None:
                 ydata = spectrum_array