X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fjalview%2Fanalysis%2FConservation.java;h=2a065f6cb37fd8adff3d8ad6cccec467af3463a8;hb=6d94bfcf539e558b09a08102b228e65e670f77d8;hp=9e9471f2e3018820f93be08805113c402be5956e;hpb=d423f22792e47dbc800ae220a58677f988971d06;p=jalview.git

diff --git a/src/jalview/analysis/Conservation.java b/src/jalview/analysis/Conservation.java
index 9e9471f..2a065f6 100755
--- a/src/jalview/analysis/Conservation.java
+++ b/src/jalview/analysis/Conservation.java
@@ -1,6 +1,6 @@
 /*
- * Jalview - A Sequence Alignment Editor and Viewer (Version 2.5)
- * Copyright (C) 2010 J Procter, AM Waterhouse, G Barton, M Clamp, S Searle
+ * Jalview - A Sequence Alignment Editor and Viewer (Version 2.7)
+ * Copyright (C) 2011 J Procter, AM Waterhouse, G Barton, M Clamp, S Searle
  * 
  * This file is part of Jalview.
  * 
@@ -100,7 +100,7 @@ public class Conservation
     int s, sSize = sequences.size();
     SequenceI[] sarray = new SequenceI[sSize];
     this.sequences = sarray;
-
+    try {
     for (s = 0; s < sSize; s++)
     {
       sarray[s] = (SequenceI) sequences.elementAt(s);
@@ -109,6 +109,12 @@ public class Conservation
         maxLength = sarray[s].getLength();
       }
     }
+    } catch (ArrayIndexOutOfBoundsException ex)
+    {
+      // bail - another thread has modified the sequence array, so the current calculation is probably invalid. 
+      this.sequences=new SequenceI[0];
+      maxLength=0;
+    }
   }
 
   /**
@@ -271,7 +277,9 @@ public class Conservation
         }
       }
 
-      total[i - start] = resultHash;
+      if (total.length>0) {
+        total[i - start] = resultHash;
+      }
     }
   }