Ooh, Amorwind is a beautiful map! You have good taste.
Way back when I had it, it caused my game to crash too. I fixed it by deleting an extra particle file that I found hiding within my FH folder. Check your My Objects folder (FH/Media/Objects/My_Objects) for any files with numbers at the end like _0 or _1. I hope the fix is as easy as this for you.