From eb53458ceff17b79d613ec208b5185f541eb6320 Mon Sep 17 00:00:00 2001
From: jprocter <Jim Procter>
Date: Thu, 29 Apr 2010 15:02:42 +0000
Subject: [PATCH] property change race condition (bug 0062693) and isAligned
 assertion (bug 0008144)

---
 src/jalview/gui/TreePanel.java |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/jalview/gui/TreePanel.java b/src/jalview/gui/TreePanel.java
index c6d87d7..646cbb4 100755
--- a/src/jalview/gui/TreePanel.java
+++ b/src/jalview/gui/TreePanel.java
@@ -141,6 +141,8 @@ public class TreePanel extends GTreePanel
           if (tree == null)
           {
             System.out.println("tree is null");
+            // TODO: deal with case when a change event is received whilst a tree is still being calculated - should save reference for processing message later.
+            return;
           }
           if (evt.getNewValue() == null)
           {
-- 
1.7.10.2