From 8f2acf658e855209c6db6b68d5cc0779733c3d7e Mon Sep 17 00:00:00 2001
From: amwaterhouse <Andrew Waterhouse>
Date: Wed, 25 May 2005 16:36:57 +0000
Subject: [PATCH] selectiongroup could be null

---
 src/jalview/gui/PCAPanel.java |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/jalview/gui/PCAPanel.java b/src/jalview/gui/PCAPanel.java
index 8e0bc37..d0b3bbc 100755
--- a/src/jalview/gui/PCAPanel.java
+++ b/src/jalview/gui/PCAPanel.java
@@ -23,7 +23,7 @@ public class PCAPanel extends GPCAPanel implements Runnable
   public PCAPanel(AlignViewport av, SequenceI[] s) {
 
     this.av = av;
-    if(av.getSelectionGroup().getSize()>3)
+    if(av.getSelectionGroup()!=null && av.getSelectionGroup().getSize()>3)
     {
       s = new Sequence[av.getSelectionGroup().getSize()];
       for(int i=0; i<s.length; i++)
-- 
1.7.10.2