JAL-2020 fix for Jmol choking jalview while loading a structure

diff --git a/src/jalview/structures/models/AAStructureBindingModel.java b/src/jalview/structures/models/AAStructureBindingModel.java
index 42fbfa9..dc42315 100644 (file)
--- a/src/jalview/structures/models/AAStructureBindingModel.java
+++ b/src/jalview/structures/models/AAStructureBindingModel.java
@@ -598,6 +598,10 @@ public abstract class AAStructureBindingModel extends
       for (String file : files)
       {
         notLoaded = file;
+        if (file == null)
+        {
+          continue;
+        }
         try
         {
           StructureMapping[] sm = getSsm().getMapping(file);