X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fschemes%2FRNAHelicesColour.java;h=9729a8347f2de9bc3a2e8c32ed7c5a2f070e7be7;hb=cd06f45d5fedf6fcc87c0d77aa6c2b1fb6ea7a46;hp=d17f510be1ed9c2b0e63cd07ab5eae05afd67f9f;hpb=4d7f98a6dd54d9863ba449ec79dcd95d25ed863d;p=jalview.git

diff --git a/src/jalview/schemes/RNAHelicesColour.java b/src/jalview/schemes/RNAHelicesColour.java
index d17f510..9729a83 100644
--- a/src/jalview/schemes/RNAHelicesColour.java
+++ b/src/jalview/schemes/RNAHelicesColour.java
@@ -91,6 +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++)
     {