Bukkit

[07:24:37] [Server thread/INFO]: [Werewolf] Enabling Werewolf v0.7.9
[07:24:37] [Server thread/INFO]: [Werewolf v0.7.9] Vault detected. Bounties and sign economy are enabled!
[07:24:37] [Server thread/INFO]: [Werewolf v0.7.9] Vampire plugin detected. Enabling support for vampirism :-)
[07:24:37] [Server thread/INFO]: [Werewolf v0.7.9] Allowed worlds is empty. Adding world world as werewolf world.
[07:24:37] [Server thread/INFO]: [Werewolf v0.7.9] Using PermissionsEx.
[07:24:37] [Server thread/INFO]: [Werewolf v0.7.9] Loaded 0 werewolves.
[07:24:37] [Server thread/INFO]: [Werewolf v0.7.9] Loaded 0 clans.
[07:24:37] [Server thread/INFO]: Creating language file directory '/lang'...
[07:24:37] [Server thread/INFO]: [Werewolf v0.7.9] Could not load english.yml from the /lang folder.
[07:24:37] [Server thread/INFO]: [Werewolf v0.7.9] Downloading english.yml from DogOnFire...
[07:24:38] [Server thread/INFO]: [Werewolf v0.7.9] Could not download english.yml language file from DogOnFire: http://www.doggycraft.dk/plugins/werewolf/lang/english.yml
[07:24:38] [Server thread/ERROR]: Error occurred while enabling Werewolf v0.7.9 (Is it up to date?)
java.lang.NullPointerException
    at com.dogonfire.werewolf.LanguageManager.getLanguageString(LanguageManager.java:195) ~[?:?]
    at com.dogonfire.werewolf.ItemManager.newInfectionPotion(ItemManager.java:73) ~[?:?]
    at com.dogonfire.werewolf.Recipes.InfectionPotion(Recipes.java:128) ~[?:?]
    at com.dogonfire.werewolf.ItemManager.setupRecipes(ItemManager.java:32) ~[?:?]
    at com.dogonfire.werewolf.Werewolf.onEnable(Werewolf.java:394) ~[?:?]
    at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) ~[spigot.jar:git-Spigot-21fe707-e1ebe52]
    at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:340) [spigot.jar:git-Spigot-21fe707-e1ebe52]
    at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [spigot.jar:git-Spigot-21fe707-e1ebe52]
    at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugin(CraftServer.java:357) [spigot.jar:git-Spigot-21fe707-e1ebe52]
    at org.bukkit.craftbukkit.v1_8_R3.CraftServer.enablePlugins(CraftServer.java:317) [spigot.jar:git-Spigot-21fe707-e1ebe52]
    at net.minecraft.server.v1_8_R3.MinecraftServer.s(MinecraftServer.java:414) [spigot.jar:git-Spigot-21fe707-e1ebe52]
    at net.minecraft.server.v1_8_R3.MinecraftServer.k(MinecraftServer.java:378) [spigot.jar:git-Spigot-21fe707-e1ebe52]
    at net.minecraft.server.v1_8_R3.MinecraftServer.a(MinecraftServer.java:333) [spigot.jar:git-Spigot-21fe707-e1ebe52]
    at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:263) [spigot.jar:git-Spigot-21fe707-e1ebe52]
    at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:525) [spigot.jar:git-Spigot-21fe707-e1ebe52]
    at java.lang.Thread.run(Unknown Source) [?:1.8.0_101]
[07:24:38]