X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fschemes%2FRNAHelicesColour.java;h=9729a8347f2de9bc3a2e8c32ed7c5a2f070e7be7;hb=37de9310bec3501cbc6381e0c3dcb282fcaad812;hp=ffc013d654ced7a2ad6b1e113356cbcc33070553;hpb=60b63ec67604be95d1be4ff04e51c5705b05b109;p=jalview.git

diff --git a/src/jalview/schemes/RNAHelicesColour.java b/src/jalview/schemes/RNAHelicesColour.java
index ffc013d..9729a83 100644
--- a/src/jalview/schemes/RNAHelicesColour.java
+++ b/src/jalview/schemes/RNAHelicesColour.java
@@ -40,7 +40,6 @@ import java.util.Map;
 public class RNAHelicesColour extends ResidueColourScheme
 {
 
-
   /**
    * Maps sequence positions to the RNA helix they belong to. Key: position,
    * Value: helix TODO: Revise or drop in favour of annotation position numbers
@@ -92,6 +91,10 @@ public class RNAHelicesColour extends ResidueColourScheme
     // This loop will find the first rna structure annotation by which to colour
     // the sequences.
     AlignmentAnnotation[] annotations = alignment.getAlignmentAnnotation();
+    if (annotations == null)
+    {
+      return;
+    }
     for (int i = 0; i < annotations.length; i++)
     {