Yeah you normally when you apply a ppf to a map the hhht or ppfomatic make a backup unless you didn't set it up to. If you didn't set it up to make a backup you are out of luck since I am sure you didn't make backup of your maps by copying them and putting them in another folder. I am thinking you need to reinstall since you didn't follow the number 1 rule of modding. Rule 1: Backup your stuff before you make changes to anything!