Colour be RNA helices bug fixed

[jalview.git] / src / jalview / schemes / RNAHelicesColour.java

diff --git a/src/jalview/schemes/RNAHelicesColour.java b/src/jalview/schemes/RNAHelicesColour.java
index 168aa31..a2ffff5 100644 (file)
--- a/src/jalview/schemes/RNAHelicesColour.java
+++ b/src/jalview/schemes/RNAHelicesColour.java
@@ -66,7 +66,8 @@ public class RNAHelicesColour extends ResidueColourScheme
 
   public void refresh()
   {
-    if (lastrefresh != annotation._rnasecstr.hashCode()
+    if ((annotation._rnasecstr == null
+               || lastrefresh != annotation._rnasecstr.hashCode())
             && annotation.isValidStruc())
     {
       annotation.getRNAStruc();