If you've used this recipe before and everything was fine until you added the FO, I'd chalk it up to that FO. Some FO's cause funny reactions in soap. Apple scents always seem to rice for me, florals speed up trace drastically, and pine tar is soap on a stick. When you peeked it sounds like it was gelling. If it's hard now, even though it looks like cottage cheese it'll probably be ok. Just make sure there's no liquid seeping from the inside of the bars when you cut them, cure as you normally would, should be fine. HTH