X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fio%2FSequenceAnnotationReport.java;h=27c1652943c77b81c4bee965bed0d052b04f2cff;hb=69e8792b5f1ed2c02cff0a1ee328793ab5c0f423;hp=8328e7ab45b64ffa6f5f1efeafd30d52ad203a09;hpb=de96de2488774840f2f6298d757369f9e43acaee;p=jalview.git

diff --git a/src/jalview/io/SequenceAnnotationReport.java b/src/jalview/io/SequenceAnnotationReport.java
index 8328e7a..27c1652 100644
--- a/src/jalview/io/SequenceAnnotationReport.java
+++ b/src/jalview/io/SequenceAnnotationReport.java
@@ -216,6 +216,11 @@ public class SequenceAnnotationReport
     {
       beginRange = mf.getMappedPositions(begin, begin);
       endRange = mf.getMappedPositions(end, end);
+      if (beginRange == null || endRange == null)
+      {
+        // something went wrong
+        return false;
+      }
       begin = beginRange[0];
       end = endRange[endRange.length - 1];
     }