I use 0.5.5 biomesoplenty and no create any biome only see vanilla biome why

Seriously man? This is asked almost daily on MCF and yet you still report it as a bug. Even worse, your using an outdated version (If your not using the latest version made by us, we'll just completely ignore your bug report).

Anyways, this is not a bug. You need to change the world type on the world generation screen.