From 6906bad46d9a65df68c979fc2afe7a1c73cbcec5 Mon Sep 17 00:00:00 2001
From: jprocter <Jim Procter>
Date: Wed, 1 Aug 2007 16:25:34 +0000
Subject: [PATCH] null pointer exception bug fix

---
 src/jalview/analysis/CrossRef.java |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/jalview/analysis/CrossRef.java b/src/jalview/analysis/CrossRef.java
index 9e99c7c..f475ecb 100644
--- a/src/jalview/analysis/CrossRef.java
+++ b/src/jalview/analysis/CrossRef.java
@@ -377,8 +377,13 @@ public class CrossRef
           AlignmentI dataset, Vector rseqs, AlignedCodonFrame cf, boolean direct, boolean dna)
   {
     boolean found = false;
-    if (dataset==null)
+    if (dataset==null) 
       return false;
+    if (dataset.getSequences()==null)
+    {
+      System.err.println("Empty dataset sequence set - NO VECTOR");
+      return false;
+    }
     Enumeration e = dataset.getSequences().elements();
     while (e.hasMoreElements())
     {
-- 
1.7.10.2