I've been playing around with Mystcraft and as near as I can tell my pages do basically nothing. I'm trying to make a specific world - single biome (desert hills), dark sun, normal moon and stars, dungeons, dark lighting, skylands, normal weather, and I used NEI to acquire and include the "clear modifiers" page because the wiki told me I had to due to a bug.
When I input this, however, it doesn't give me the world I wrote, at all. I've been using my notebook and writing desk to copy out the pages and remake the world and every single one that I've made is wrong. It randomly selects biomes for me (one time it gave me a glacier and a fire swamp, another time it gave me grassy hills), it keeps giving me ender worlds instead of skylands, and the latest time it even gave me a cave world. About the only thing it's actually getting right is the dark sun.
As near as I can tell Mystcraft is just broken, pages do nothing, and you recieve a random world every time no matter what. This can't be the case, can it?
If it helps, I'm using FTB Ultimate.