java.lang.InstantiationException
	at sun.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.7.0_79]
	at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.7.0_79]
	at java.lang.Class.newInstance(Unknown Source) ~[?:1.7.0_79]
	at net.minecraftforge.common.DimensionManager.createProviderFor(DimensionManager.java:292) [DimensionManager.class:?]
	at net.minecraft.world.WorldProvider.getProviderForDimension(WorldProvider.java:179) [WorldProvider.class:?]
	at net.minecraft.world.WorldServer.<init>(WorldServer.java:113) [WorldServer.class:?]
	at net.minecraft.world.WorldServerMulti.<init>(WorldServerMulti.java:18) [WorldServerMulti.class:?]
	at net.minecraft.server.integrated.IntegratedServer.loadAllWorlds(IntegratedServer.java:94) [IntegratedServer.class:?]
	at net.minecraft.server.integrated.IntegratedServer.startServer(IntegratedServer.java:127) [IntegratedServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:508) [MinecraftServer.class:?]
	at java.lang.Thread.run(Unknown Source) [?:1.7.0_79]
[13:23:22] [Server thread/ERROR]: Encountered an unexpected exception
java.lang.RuntimeException: java.lang.InstantiationException
	at net.minecraftforge.common.DimensionManager.createProviderFor(DimensionManager.java:305) ~[DimensionManager.class:?]
	at net.minecraft.world.WorldProvider.getProviderForDimension(WorldProvider.java:179) ~[WorldProvider.class:?]
	at net.minecraft.world.WorldServer.<init>(WorldServer.java:113) ~[WorldServer.class:?]
	at net.minecraft.world.WorldServerMulti.<init>(WorldServerMulti.java:18) ~[WorldServerMulti.class:?]
	at net.minecraft.server.integrated.IntegratedServer.loadAllWorlds(IntegratedServer.java:94) ~[IntegratedServer.class:?]
	at net.minecraft.server.integrated.IntegratedServer.startServer(IntegratedServer.java:127) ~[IntegratedServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:508) [MinecraftServer.class:?]
	at java.lang.Thread.run(Unknown Source) [?:1.7.0_79]
Caused by: java.lang.InstantiationException
	at sun.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.7.0_79]
	at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.7.0_79]
	at java.lang.Class.newInstance(Unknown Source) ~[?:1.7.0_79]
	at net.minecraftforge.common.DimensionManager.createProviderFor(DimensionManager.java:292) ~[DimensionManager.class:?]
	... 7 more