Open up Map Maker and load your map, then hit the Export button.
Go to your Feralheart "exports" folder and you will find your maps exported files such as .fhm (the map file), .fho (object groups), .fhs (sky files if you used one), .fhw (weather cycle if you used one).
You need to find and collect all these objects and put them all in a new folder.
Compress the folder (if you want but its easier and quicker to upload that way i find), open up a file sharing site on your internet browser and upload that folder.
Then give your friend download link so they can download it, once they've downloaded it then they place all the files into their exports folder and the portal will be in Cape of Distant Worlds.
Hmmm, im not sure what to do about the Feralheart+ though. What exactly do you mean though? Whats not working with it? Any errors?