diff -r 3a44a2bb6da8 -r f227a74db59d io_helper.cc
--- a/io_helper.cc	Wed Aug 13 17:24:25 2008 +0100
+++ b/io_helper.cc	Fri Oct 10 13:36:20 2008 +0100
@@ -27,7 +27,7 @@
       }
       else
       {
-        throw DataFormatError("Bad format");
+        throw FormatError("Bad format");
       }
     }
   }