In the instructions, under 'Create your world,' there is an option called Land Mass which allows you to change the config of the map. Guess they cut it, and didn't take it out of the inst.
They really should put it back in, or enable it. I tried creating a map that way with the tools, but even if you pick "Single Continent" you still get bunches of islands.
Sounds like something is borked to me.
Anyway, thanks.,