Hm.. It sounds like something in the game's coding glitched out when you exported this map.
I would suggest backing up any maps or presets (take their individual folders out of the FH file and back it up elsewhere) that you want to keep, then delete your FH folder, and reinstall. I believe that would be the simplest way to correct these codes, since I'm fairly positive they're all error messages that ought not be there, even more so since they look like they belong to the encryted public maps.
Reinstall the game, then put your map's folder back into your FeralHeart >> Media >> Terrains folder, then restart the game.
Try exporting your map again, and see if this works with a slightly less laggy map.