Using this mod with abyssalcraft prevents the dreadlands dimension from generating correctly. The only biome that generates in this dimension is the generic dreadlands biome (supposed to have the dreadlands mountains, dreadlands forest and purified dreadlands. Also supposed to have generates structures which aren't there either). I know it's this mod that's causing the issue
because when I remove it, start a creative world, and go directly to the dreadlands it generates correctly.