From 7856e91f60adc5c2d4943bad84a5a83e1412f00c Mon Sep 17 00:00:00 2001
From: Jim Procter <j.procter@dundee.ac.uk>
Date: Tue, 27 Jul 2021 14:26:09 +0100
Subject: [PATCH] JAL-3674 Jmol seems to sometimes return a null for some
 commands, handle it at source

---
 src/jalview/structures/models/AAStructureBindingModel.java |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/jalview/structures/models/AAStructureBindingModel.java b/src/jalview/structures/models/AAStructureBindingModel.java
index 16dd96c..289d340 100644
--- a/src/jalview/structures/models/AAStructureBindingModel.java
+++ b/src/jalview/structures/models/AAStructureBindingModel.java
@@ -1096,7 +1096,10 @@ public abstract class AAStructureBindingModel
         for (StructureCommandI cmd : cmds)
         {
           List<String> replies = executeCommand(cmd, true);
-          response.addAll(replies);
+          if (replies != null)
+          {
+            response.addAll(replies);
+          }
         }
         return response;
       } finally
-- 
1.7.10.2