[tproxy] error comming --ip_tables: TPROXY target: invalid size 8 != 16

hello everyone i am trying to configure my tproxy, i am using debian - kernel 2.6.18.6 and successfully patched the cttproxy-2.6.18-2.0.6. and iptables-1.4.3.1 successfully patched by tproxy-iptables-1.4.0-20080521-113954-1211362794.patch now i am going to add the following chain on my iptables-- iptables -t tproxy -A PREROUTING -i eth0 -p tcp -m tcp --dport 80 -j TPROXY --on-port 80 it is showing this following error--- iptables: Invalid argument. Run `dmesg' for more information. debproxy:~# dmesg ip_tables: TPROXY target: invalid size 8 != 16 ip_tables: TPROXY target: invalid size 8 != 16 Please let me know where is the problem and how to solve this. thanks and regards Adnan