[18:18:56] [Server thread/ERROR]: [TerrainControl] Could not set generator for default world 'world': Plugin 'TerrainControl v2.6.4
java.lang.NoClassDefFoundError: net/minecraft/server/v1_8_R1/World
        at com.khorn.terraincontrol.bukkit.TCPlugin.getDefaultWorldGenerator(TCPlugin.java:153) ~[?:?]
        at org.bukkit.craftbukkit.v1_7_R4.CraftServer.getGenerator(CraftServer.java:1335) [spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        at net.minecraft.server.v1_7_R4.MinecraftServer.a(MinecraftServer.java:220) [spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        at net.minecraft.server.v1_7_R4.DedicatedServer.init(DedicatedServer.java:210) [spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:458) [spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_8_R1.WorldGenFactory
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:91) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:425) ~[?:1.7.0_65]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ~[?:1.7.0_65]
        ... 6 more