X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Futil%2FMappingUtils.java;h=f2213adcdcffa65363e887cf4b6cad441f17a4ec;hb=604a94b849bcf1ddb14407418a465c9d134cd6ab;hp=df21355a58280a0930cad2e1a0b7138c8119c3d9;hpb=30430dc0a4b26c410928adb24c296e6c654b5847;p=jalview.git

diff --git a/src/jalview/util/MappingUtils.java b/src/jalview/util/MappingUtils.java
index df21355..f2213ad 100644
--- a/src/jalview/util/MappingUtils.java
+++ b/src/jalview/util/MappingUtils.java
@@ -494,6 +494,12 @@ public final class MappingUtils
     Set<AlignedCodonFrame> codonFrames = protein.getAlignment()
             .getCodonFrames();
     ColumnSelection mappedColumns = new ColumnSelection();
+
+    if (colsel == null)
+    {
+      return mappedColumns;
+    }
+
     char fromGapChar = mapFrom.getAlignment().getGapCharacter();
 
     // FIXME allow for hidden columns