You'll probably just have to wait for the new version of the mod to come out, if it hasn't already. If the mod hasn't been updated to 1.31, or whatever FH is up to now {Not very up wif the times, sorry xD}, it could mess up FH for the stupidest reason. Just wait, or try to find the newest version. If you have the up-to-date version, get in contact with the person who made the mod, and they'll help problem solve this for you.