Bukkit

This error spits out.
2.6 works. Other then Vaults don't function. And I cant use item ids like 10:1...

[14:11:43 ERROR]: Error occurred while enabling Gringotts v2.7 (Is it up to date?)
java.lang.NoSuchFieldError: SLIME_BLOCK
	at net.milkbowl.vault.item.Items.(Items.java:667) ~[?:?]
	at org.gestern.gringotts.Configuration.unitName(Configuration.java:270) ~[?:?]
	at org.gestern.gringotts.Configuration.parseCurrency(Configuration.java:182) ~[?:?]
	at org.gestern.gringotts.Configuration.readConfig(Configuration.java:115) ~[?:?]
	at org.gestern.gringotts.Gringotts.reloadConfig(Gringotts.java:187) ~[?:?]
	at org.gestern.gringotts.Gringotts.onEnable(Gringotts.java:68) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:316) ~[JavaPlugin.class:KCauldron-1.7.10-2.1403.1.54]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:368) [JavaPluginLoader.class:KCauldron-1.7.10-2.1403.1.54]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:410) [SimplePluginManager.class:KCauldron-1.7.10-2.1403.1.54]
	at org.bukkit.craftbukkit.v1_7_R4.CraftServer.loadPlugin(CraftServer.java:415) [CraftServer.class:KCauldron-1.7.10-2.1403.1.54]
	at org.bukkit.craftbukkit.v1_7_R4.CraftServer.enablePlugins(CraftServer.java:349) [CraftServer.class:KCauldron-1.7.10-2.1403.1.54]
	at net.minecraft.world.storage.SaveHandler.initBukkitData(SaveHandler.java:462) [ayq.class:?]
	at net.minecraft.world.storage.SaveHandler.func_75757_d(SaveHandler.java:137) [ayq.class:?]
	at net.minecraft.world.World.(World.java:349) [ahb.class:?]
	at net.minecraft.world.WorldServer.(WorldServer.java:153) [mt.class:?]
	at net.minecraft.server.MinecraftServer.func_71247_a(MinecraftServer.java:356) [MinecraftServer.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:335) [lt.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:620) [MinecraftServer.class:?]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_111]