X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fanalysis%2FAverageDistanceEngine.java;h=c52c7be3675b8adeb0e0cded0a57f9da43afe049;hb=9e40070f757fc662aba39ba6314be4937276ead4;hp=e6a763b62d2b97909c476ef6f6fb7218b911cf6d;hpb=54d087d5f1e550d0d17882b1e594683146ca7e6a;p=jalview.git

diff --git a/src/jalview/analysis/AverageDistanceEngine.java b/src/jalview/analysis/AverageDistanceEngine.java
index e6a763b..c52c7be 100644
--- a/src/jalview/analysis/AverageDistanceEngine.java
+++ b/src/jalview/analysis/AverageDistanceEngine.java
@@ -105,6 +105,10 @@ public class AverageDistanceEngine extends TreeEngine
       {
         distances.setValue(i, i, 0);
         ContactListI jth = cm.getContactList(j);
+        if (jth==null)
+        {
+          break;
+        }
         double prd = 0;
         for (int indx = 0; indx < cm.getHeight(); indx++)
         {