diff -Naur ParaView3/Plugins/H5PartReader/H5Part/src/H5PartTypes.h ParaView3.new/Plugins/H5PartReader/H5Part/src/H5PartTypes.h
--- ParaView3/Plugins/H5PartReader/H5Part/src/H5PartTypes.h	2009-10-01 15:19:59.000000000 -0400
+++ ParaView3.new/Plugins/H5PartReader/H5Part/src/H5PartTypes.h	2010-01-30 09:40:22.000000000 -0500
@@ -17,7 +17,7 @@
 #endif
  ;
 
-#ifndef H5PART_HAS_MPI
+#if !defined(H5PART_HAS_MPI) && !defined(MPI_BOTTOM)
 typedef int  MPI_Comm;
 #endif