From f48c76a5fec4cbe253351bcdebaca4bcb09d98a5 Mon Sep 17 00:00:00 2001
From: amwaterhouse <Andrew Waterhouse>
Date: Wed, 25 Oct 2006 14:57:37 +0000
Subject: [PATCH] Return if negative width, ie alignment deleted

---
 src/jalview/gui/AlignViewport.java |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/jalview/gui/AlignViewport.java b/src/jalview/gui/AlignViewport.java
index fb3d4df..f9f32e4 100755
--- a/src/jalview/gui/AlignViewport.java
+++ b/src/jalview/gui/AlignViewport.java
@@ -280,6 +280,8 @@ public class AlignViewport
         try
         {
           int alWidth = alignment.getWidth();
+          if(alWidth<0)
+            return;
 
           Conservation cons = new jalview.analysis.Conservation("All",
               jalview.schemes.ResidueProperties.propHash, 3,
@@ -459,6 +461,8 @@ public class AlignViewport
         try
         {
           int aWidth = alignment.getWidth();
+          if(aWidth<0)
+            return;
 
           consensus.annotations = null;
           consensus.annotations = new Annotation[aWidth];
-- 
1.7.10.2