X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fgui%2FScalePanel.java;h=32283ce8654192f0c8eea61795782ec0e3f571c2;hb=629aab8cacd34324f5bd6aad568db5857fec8c81;hp=19211cd89d68c58e5adc18d8be32b4753325c142;hpb=174230b4233d9ce80f94527768d2cd2f76da11ab;p=jalview.git

diff --git a/src/jalview/gui/ScalePanel.java b/src/jalview/gui/ScalePanel.java
index 19211cd..32283ce 100755
--- a/src/jalview/gui/ScalePanel.java
+++ b/src/jalview/gui/ScalePanel.java
@@ -118,6 +118,10 @@ public class ScalePanel extends JPanel implements MouseMotionListener, MouseList
               public void actionPerformed(ActionEvent e)
               {
                 av.hideColumns(res, res);
+                if(av.getSelectionGroup()!=null
+                   && av.getSelectionGroup().getSize()==av.alignment.getHeight())
+                  av.setSelectionGroup(null);
+
                 ap.repaint();
                 if (ap.overviewPanel != null)
                   ap.overviewPanel.updateOverviewImage();
@@ -192,15 +196,16 @@ public class ScalePanel extends JPanel implements MouseMotionListener, MouseList
 
         SequenceGroup sg = av.getSelectionGroup();
 
-        if (res > sg.getStartRes())
-        {
+        if(sg!=null){
+          if (res > sg.getStartRes())
+          {
             sg.setEndRes(res);
-        }
-        else if (res < sg.getStartRes())
-        {
+          }
+          else if (res < sg.getStartRes())
+          {
             sg.setStartRes(res);
+          }
         }
-
         stretchingGroup = false;
         ap.repaint();
     }