From 2cc0c155f1e785ce3d53529bb4375d4ddf1e8cc9 Mon Sep 17 00:00:00 2001
From: jprocter <Jim Procter>
Date: Thu, 16 Sep 2010 11:53:45 +0000
Subject: [PATCH] patch to prevent NPE - which occurs if no features are
 available (see JAL-650)

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

diff --git a/src/jalview/gui/AnnotationExporter.java b/src/jalview/gui/AnnotationExporter.java
index 857eabc..ceccd97 100755
--- a/src/jalview/gui/AnnotationExporter.java
+++ b/src/jalview/gui/AnnotationExporter.java
@@ -196,6 +196,10 @@ public class AnnotationExporter extends JPanel
   private Hashtable getDisplayedFeatureCols()
   {
     Hashtable fcols = new Hashtable();
+    if (ap.av.featuresDisplayed==null)
+    {
+      return fcols;
+    }
     Enumeration en = ap.av.featuresDisplayed.keys();
     FeatureRenderer fr = ap.seqPanel.seqCanvas.getFeatureRenderer(); // consider
                                                                      // higher
-- 
1.7.10.2