--- a/util/datamanager.lua	Fri Nov 14 02:54:56 2008 +0000
+++ b/util/datamanager.lua	Sat Nov 15 05:33:14 2008 +0500
@@ -6,7 +6,7 @@
 local log = log;
 local io_open = io.open;
 local os_remove = os.remove;
-local tostring = tostring;
+local tostring, tonumber = tostring, tonumber;
 local error = error;
 local next = next;
 local t_insert = table.insert;