Perhaps this is a case of PEBKAC however I am having trouble figuring out how to generate a pattern with this mod. no matter what combination of settings I try to use, the only visible effect is that I can turn on or off the default Terrain Generation. Specifically I want to create a Square Spiral map.

Attached are my settings and the resulting nothing that happens.

https://imgur.com/a/W7uS15P

Uhh Nevermind. It appears that I didn't read all the directions carefully enough, the map doesn't show in the preview.

Yeah sorry, there's no way for me to make the map show up in the preview. I try to compensate by showing some screenshots of example patterns so you have some idea what to expect. Glad to hear you got it to work!