snmp options adding issue

[liu.cy]

i installed mac track 2.9.
i added a snmp options set named cisco, and try to add a SNMP Option.
the snmp version is selected to v2 and the community string, port, timeout etc are default.
it shows Error: Save Failed: Field Input Error (Check Red Fields) when i click save button.
but there is no red field.

my mactrack_scaner.php debug info is:
php mactrack_scanner.php -d -id=1
DEBUG: HOST: 10.149.101.2 is alive, processing has begun.
DEBUG: Scanning function is 'get_IOS_dot1dTpFdbEntry_ports'
DEBUG: There are -3 VLANS.
DEBUG: ifIndexes data collection complete
DEBUG: ifIndexes data collection complete. '59' rows found!
DEBUG: ifTypes data collection complete. '59' rows found!
DEBUG: ifNames data collection complete. '59' rows found!
DEBUG: ifAlias data collection complete. '59' rows found!
DEBUG: ipAddrTable scanning for link ports data collection complete. '10' rows found!
DEBUG: ifSpeed data collection complete. '59' rows found!
DEBUG: ifHighSpeed data collection complete. '59' rows found!
DEBUG: ifDuplex data collection complete. '0' rows found!
DEBUG: ifDescr data collection complete. '59' rows found!
DEBUG: ifMtu data collection complete. '59' rows found!
DEBUG: ifPhysAddress data collection complete. '59' rows found!
DEBUG: ifAdminStatus data collection complete. '59' rows found!
DEBUG: ifOperStatus data collection complete. '59' rows found!
DEBUG: ifLastChange data collection complete. '59' rows found!
DEBUG: ifInOctets data collection complete. '59' rows found!
DEBUG: ifOutOctets data collection complete. '59' rows found!
DEBUG: ifInNUcastPkts data collection complete. '59' rows found!
DEBUG: ifOutNUcastPkts data collection complete. '59' rows found!
DEBUG: ifInUcastPkts data collection complete. '59' rows found!
DEBUG: ifOutUcastPkts data collection complete. '59' rows found!
DEBUG: ifInDiscards data collection complete. '59' rows found!
DEBUG: ifInErrors data collection complete. '59' rows found!
DEBUG: ifInUnknownProtos data collection complete. '59' rows found!
DEBUG: ifOutDiscards data collection complete. '59' rows found!
DEBUG: ifOutErrors data collection complete. '59' rows found!
DEBUG: ifInterfaces assembly complete: 28150
DEBUG: Adding IfInterfaces Records
DEBUG: Cisco Voice VLAN collection complete
DEBUG: Voice VLANs do not exist on this device
DEBUG: ifInterfaces assembly complete.

INFO: HOST: 10.149.101.2, TYPE: Cisco Internetwork Operating System Soft, No active end devices on this device.

and pollor_mactrack.php debug info is:
phph poller_mactrack.php -d
-bash: phph: command not found
[root@cacti mactrack]# php poller_mactrack.php -d
DEBUG: About to enter MacTrack poller processing
DEBUG: Into Processing. Checking to determine if it's time to run.
DEBUG: Checking if user changed the start time
DEBUG: Checking if user changed the maintenance time
DEBUG: The next run time has been determined to be at '2010-12-08 16:25:20'
DEBUG: The next database maintenance run time has been determined to be at '2010-12-09 0:00:00'
[root@cacti mactrack]# php poller_mactrack.php -d -f
DEBUG: About to enter MacTrack poller processing
DEBUG: Into Processing. Checking to determine if it's time to run.
DEBUG: Checking if user changed the start time
DEBUG: Checking if user changed the maintenance time
DEBUG: The next run time has been determined to be at '2010-12-08 16:25:20'
DEBUG: The next database maintenance run time has been determined to be at '2010-12-09 0:00:00'
DEBUG: Either a scan has been forced, or it's time to check for macs
DEBUG: CMD: /usr/bin/php -q /var/www/cacti/plugins/mactrack/mactrack_scanner.php -id=1 -d
12/08/2010 04:17:43 PM - POLLER: Poller[0] DEBUG: About to Spawn a Remote Process [CMD: /usr/bin/php, ARGS: -q /var/www/cacti/plugins/mactrack/mactrack_scanner.php -id=1 -d]
12/08/2010 04:17:45 PM - POLLER: Poller[0] DEBUG: About to Spawn a Remote Process [CMD: /usr/bin/php, ARGS: -q /var/www/cacti/plugins/mactrack/mactrack_resolver.php -d]
DEBUG: DNS Resolver process launched
DEBUG: A process cycle launch just completed.
DEBUG: Waiting on 1 with id = [-1, 0, 1] to complete prior to exiting.
DEBUG: Waiting on 1 with id = [-1, 0, 1] to complete prior to exiting.
DEBUG: Waiting on 1 with id = [-1, 0, 1] to complete prior to exiting.
DEBUG: Waiting on 1 with id = [-1, 0, 1] to complete prior to exiting.
DEBUG: Waiting on 0 with id = [-1, 0] to complete prior to exiting.
DEBUG: Interum IP addresses to MAC addresses association pass complete.
DEBUG: MAC addresses to Vendor MACS association pass complete.
DEBUG: MAC VLAN's in VLAN Table Updated.
DEBUG: Finished transferring scan results to main table.
DEBUG: Finished updating site table with collection statistics.
12/08/2010 04:18:00 PM - SYSTEM MACTRACK STATS: Time:17.1671 ConcurrentProcesses:7 Devices:1

thanks.