I was flying around in creative mode when I came a cross a Wyvern Lair biome in the Overworld. I'm pretty sure this isn't supposed to happen, and I'm guessing it was either caused by Thaumcraft or the Highlands mod, as these are the only mods I use that add biomes. Still, thought it was pretty cool.
yeah checking ldshadowlady's shadowcraft 2.0 videos also say she found this and i also think beancraft as well on smallishbean's i only know these two reports of it other than this one its actually rather cool and i would love that but... my dad's the only one who knows how 2 instal a mod :P eh whatever
To be honest, you don't have to delete the mods rather than maybe change the config for Mo' Creatures' biomes, and make the wyvern lair a different ID as for one of the mods biome's may have the same ID as prementioned. Though, I will admit this is very neat and useful for if you don't want players in the wyvern lair on a server.