From 813abcbd234db6ac665bf43ffc17759f33667015 Mon Sep 17 00:00:00 2001
From: amwaterhouse <Andrew Waterhouse>
Date: Wed, 15 Jun 2005 15:04:28 +0000
Subject: [PATCH] check colourscheme is not null

---
 src/jalview/gui/SliderPanel.java |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/jalview/gui/SliderPanel.java b/src/jalview/gui/SliderPanel.java
index f95f84b..1a62fff 100755
--- a/src/jalview/gui/SliderPanel.java
+++ b/src/jalview/gui/SliderPanel.java
@@ -232,6 +232,11 @@ public class SliderPanel
       if (allGroups != null)
       {
         toChange = ( (SequenceGroup) allGroups.get(groupIndex)).cs;
+        if(toChange==null)
+        {
+          groupIndex--;
+          continue;
+        }
       }
 
       if (forConservation)
-- 
1.7.10.2