[Server] WARN This is a bug in the generator plugin, NOT a bug in Multiverse!
[Server] WARN Failed to set the generator for world 'test' to 'TerrainControl':
java.lang.NullPointerException: The validated object is null

Could you post the rest of the error? While these lines are the most useful for you, they don't contain any information for us to resolve the issue.

there is no more error just this

There must be other lines nearby containing stuff like at com.khorn.terraincontrol, but maybe your admin panel doesn't display them.

What I would try:

• create a world with another name - the name 'test' sometimes causes problems, as that name is also used internally by Multiverse for several tests.
• make sure you have the correct TerrainControl version for your Minecraft version -- see the table over here.

Ok, thanks