firewall issue i.e firewall down

hi
so i thought to make my system a bit safer by following this thread:
http://www.virtualmin.com/forums/limit/10/limitstart/10/help-home-for-ne...

however i got a
Failed to apply configuration :

Flushing firewall rules: [ OK ]
Setting chains to policy ACCEPT: filter [ OK ]
Unloading iptables modules: [ OK ]
Applying iptables firewall rules: iptables-restore v1.3.5: iptables-restore: unable to initializetable 'filter
'

Error occurred at line: 3
Try `iptables-restore -h' or 'iptables-restore --help' for more information.
[FAILED]

so i deleted the two rules I added and tried to start up the firewall again but i get a:

Executing /etc/rc.d/init.d/iptables start ..

Unloading iptables modules: [ OK ]
Applying iptables firewall rules: iptables-restore v1.3.5: iptables-restore: unable to initializetable 'filter
'

Error occurred at line: 3
Try `iptables-restore -h' or 'iptables-restore --help' for more information.
[FAILED]

so instead of safer system I end up with no firewall at all.

I replaced the iptable file with a backup to no avail.
removing the *filter ends up with no rules at all.

what can I do?
This is on a testing server running GPL version. If succeed I will implement on production server but now I hesitate.

thank you

Status: 
Closed (fixed)