Error

gistfile1.txt

[17:08:03] [Server thread/INFO]: [SurvivalGames] Enabling SurvivalGames v1.0
[17:08:03] [Server thread/ERROR]: Error occurred while enabling SurvivalGames v1.0 (Is it up to date?)
java.lang.NullPointerException
	at com.oakleystuff.oakley.SurvivalGames.Arena.<init>(Arena.java:36) ~[?:?]
	at com.oakleystuff.oakley.SurvivalGames.SurvivalGames.onEnable(SurvivalGames.java:69) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:250) ~[spigot.jar:git-Spigot-1387]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:324) [spigot.jar:git-Spigot-1387]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [spigot.jar:git-Spigot-1387]
	at org.bukkit.craftbukkit.v1_7_R2.CraftServer.loadPlugin(CraftServer.java:462) [spigot.jar:git-Spigot-1387]
	at org.bukkit.craftbukkit.v1_7_R2.CraftServer.enablePlugins(CraftServer.java:380) [spigot.jar:git-Spigot-1387]
	at net.minecraft.server.v1_7_R2.MinecraftServer.n(MinecraftServer.java:353) [spigot.jar:git-Spigot-1387]
	at net.minecraft.server.v1_7_R2.MinecraftServer.g(MinecraftServer.java:328) [spigot.jar:git-Spigot-1387]
	at net.minecraft.server.v1_7_R2.MinecraftServer.a(MinecraftServer.java:284) [spigot.jar:git-Spigot-1387]
	at net.minecraft.server.v1_7_R2.DedicatedServer.init(DedicatedServer.java:186) [spigot.jar:git-Spigot-1387]
	at net.minecraft.server.v1_7_R2.MinecraftServer.run(MinecraftServer.java:442) [spigot.jar:git-Spigot-1387]
	at net.minecraft.server.v1_7_R2.ThreadServerApplication.run(SourceFile:618) [spigot.jar:git-Spigot-1387]