problem with the portscan-ignore preprocessor

["Murray, Todd" <Todd.Murray () adidasus com>]

I'm using snort 2.1.3 with snortcenter2 on Redhat Enterprise Linux ES
release 3.  My problem is that snort doesn't like the format of the ignore
list I'm using.  Can someone tell me what the problem might be?
 
#---------------------------------------------------------------------------
----
# Snort Configuration file for < bear lan >
# Created with SnortCenter 2.x <
http://sourceforge.net/projects/snortcenter2/ >
# $Id: snort.conf, Monday 28th of June 2004 10:23:59 AM
#---------------------------------------------------------------------------
----
var EXTERNAL_NET any
var HTTP_PORTS 80
var SHELLCODE_PORTS !80
var ORACLE_PORTS 1521
var AIM_SERVERS
[64.12.24.0/24,64.12.25.0/24,64.12.26.14/24,64.12.28.0/24,64.12.29.0/24,64.1
2.161.0/24,64.12.163.0/24,205.188.5.0/24,205.188.9.0/24]
var RULE_PATH ../rules
var DNS2 10.1.5.7/32
var DNS1 10.1.5.6/32
var HOME_NET [10.1.5.0/24,10.1.29.0/24]
var SRV_NET1 10.1.5.0/24
var SNMP_SERVERS 10.2.5.179/32
var SRV_NET2 10.2.5.0/24
var TELNET_SERVERS $HOME_NET
var SQL_SERVERS $HOME_NET
var HTTP_SERVERS $HOME_NET
var SMTP_SERVERS $HOME_NET
var DNS_SERVERS [$DNS1,$DNS2]
#
preprocessor flow: stats_interval 0 hash 2
preprocessor frag2 
preprocessor stream4: disable_evasion_alerts
preprocessor stream4_reassemble 
preprocessor http_inspect: global iis_unicode_map unicode.map 1252
preprocessor http_inspect_server: server default profile all ports { 80 8080
8180 } oversize_dir_length 500
preprocessor rpc_decode: 111 32771
preprocessor bo 
preprocessor telnet_decode 
preprocessor portscan-ignorehosts: 10.1.5.0/24 10.2.5.0/24
preprocessor portscan: 0.0.0.0/0 10 3 /var/log/snort/portscan.log