Maybe. I don't know, I'm going ask to the Brazillian Youtuber that sent me the world if he has.
Don't. This world was being played by a Brazilian Youtuber from Press key to Play channel, who was recording an series of the mod since when he was known as Eternal Isles until June this year, and evennow he can no longer enter the map.
I saw that there was a chunk badly located, entities doing some chunks corrupted and I used the Minecraft Region Fixer and so this was resolved.
Now I can enter the map, I even removed the portals of Mysterium with MCEdit and still pops up the error message.
NOTE: This map is saved with the mods below, they have updated and I think this may have caused the error, especially the AoA that may have changed the rendering system of portals.