[06:30:37] [Server thread/INFO]: [SurvivalGames] Enabling SurvivalGames v1.0
[06:30:37] [Server thread/ERROR]: Error occurred while enabling SurvivalGames v1.0 (Is it up to date?)
java.lang.IllegalArgumentException: No enum constant org.bukkit.Material.268
	at java.lang.Enum.valueOf(Enum.java:236) ~[?:1.7.0_51]
	at org.bukkit.Material.valueOf(Material.java:64) ~[spigot.jar:git-Spigot-1433]
	at com.jabyftw.sgames.managers.Configuration.resolveItemStack(Configuration.java:773) ~[?:?]
	at com.jabyftw.sgames.managers.Configuration.loadTier(Configuration.java:629) ~[?:?]
	at com.jabyftw.sgames.managers.Configuration.loadConfig(Configuration.java:487) ~[?:?]
	at com.jabyftw.sgames.managers.Configuration.startConfiguration(Configuration.java:77) ~[?:?]
	at com.jabyftw.sgames.SurvivalGames.onEnable(SurvivalGames.java:52) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:250) ~[spigot.jar:git-Spigot-1433]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:324) [spigot.jar:git-Spigot-1433]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [spigot.jar:git-Spigot-1433]
	at org.bukkit.craftbukkit.v1_7_R3.CraftServer.loadPlugin(CraftServer.java:469) [spigot.jar:git-Spigot-1433]
	at org.bukkit.craftbukkit.v1_7_R3.CraftServer.enablePlugins(CraftServer.java:387) [spigot.jar:git-Spigot-1433]
	at net.minecraft.server.v1_7_R3.MinecraftServer.n(MinecraftServer.java:359) [spigot.jar:git-Spigot-1433]
	at net.minecraft.server.v1_7_R3.MinecraftServer.g(MinecraftServer.java:333) [spigot.jar:git-Spigot-1433]
	at net.minecraft.server.v1_7_R3.MinecraftServer.a(MinecraftServer.java:289) [spigot.jar:git-Spigot-1433]
	at net.minecraft.server.v1_7_R3.DedicatedServer.init(DedicatedServer.java:193) [spigot.jar:git-Spigot-1433]
	at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:450) [spigot.jar:git-Spigot-1433]
	at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [spigot.jar:git-Spigot-1433