Here is the error i get:

[17:22:39] [Server thread/ERROR]: Error occurred while enabling Essentials vTeamCity (Is it up to date?)
java.lang.NullPointerException
at com.earth2me.essentials.Essentials.onDisable(Essentials.java:348) ~[?:?]
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:323) ~[craftbukkit.jar:git-Bukkit-7f52bd6]
at com.earth2me.essentials.Essentials.handleCrash(Essentials.java:747) ~[?:?]
at com.earth2me.essentials.Essentials.onEnable(Essentials.java:275) ~[?:?]
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) ~[craftbukkit.jar:git-Bukkit-7f52bd6]
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:327) [craftbukkit.jar:git-Bukkit-7f52bd6]
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:404) [craftbukkit.jar:git-Bukkit-7f52bd6]
at org.bukkit.craftbukkit.v1_8_R2.CraftServer.loadPlugin(CraftServer.java:341) [craftbukkit.jar:git-Bukkit-7f52bd6]
at org.bukkit.craftbukkit.v1_8_R2.CraftServer.enablePlugins(CraftServer.java:313) [craftbukkit.jar:git-Bukkit-7f52bd6]
at net.minecraft.server.v1_8_R2.MinecraftServer.r(MinecraftServer.java:408) [craftbukkit.jar:git-Bukkit-7f52bd6]
at net.minecraft.server.v1_8_R2.MinecraftServer.k(MinecraftServer.java:374) [craftbukkit.jar:git-Bukkit-7f52bd6]
at net.minecraft.server.v1_8_R2.MinecraftServer.a(MinecraftServer.java:329) [craftbukkit.jar:git-Bukkit-7f52bd6]
at net.minecraft.server.v1_8_R2.DedicatedServer.init(DedicatedServer.java:236) [craftbukkit.jar:git-Bukkit-7f52bd6]
at net.minecraft.server.v1_8_R2.MinecraftServer.run(MinecraftServer.java:501) [craftbukkit.jar:git-Bukkit-7f52bd6]
at java.lang.Thread.run(Thread.java:701) [?:1.6.0_33]