JAL-2489 bug fix

diff --git a/src/jalview/io/JSONFile.java b/src/jalview/io/JSONFile.java
index 053a65e..583bbc0 100644 (file)
--- a/src/jalview/io/JSONFile.java
+++ b/src/jalview/io/JSONFile.java
@@ -767,7 +767,8 @@ public class JSONFile extends AlignFile implements ComplexAlignFile
         }
       }
     }
-    globalColourScheme = viewport.getGlobalColourScheme().getSchemeName();
+    globalColourScheme = (viewport.getGlobalColourScheme() == null) ? ResidueColourScheme.NONE
+            : viewport.getGlobalColourScheme().getSchemeName();
     setDisplayedFeatures(viewport.getFeaturesDisplayed());
     showSeqFeatures = viewport.isShowSequenceFeatures();