Gonna go off of madam Rava's response here.
Is there a .fhm file somewhere in the map's download? Be sure to place that file in yer FeralHeart > Exports folder. Then when ye' re-launch the game and scuttle into Cape of Distant Worlds, there should lie a portal just for ye' to bounce into. All .fhm files should load up a portal for ye' in Cape.