You used some guide to patch fw4 template files, I perfectly remember changing precisely those lines.
You can get future firewall.uc version here (moving drop invalid earlier in ruleset away from forward chain):
Click "view file" on top right, then download raw file and save into /usr....templates/ and the vgaetera's patch will work again. Or you do the modification yourself with e.g. notepad++
I tagged your patch author, wait a week if they want to assist. OK?