Index: trunk/DataStoreServer/scripts/dsreg
===================================================================
--- trunk/DataStoreServer/scripts/dsreg	(revision 26529)
+++ trunk/DataStoreServer/scripts/dsreg	(revision 26538)
@@ -365,4 +365,5 @@
                 # Get MD5 sum
                 $file->{md5sum} = file_md5_hex($path);
+                die("failed to compute valid md5sum for $path") if !$file->{md5sum};
             }
         }