bukkit plugin clojure fail

00:44:37 [SEVERE] Could not load 'plugins\watershipdown-0.1-SNAPSHOT-standalone.
jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.ExceptionInInitializerError
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j
ava:154)
        at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.
java:305)
        at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager
.java:230)
        at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:222)
        at org.bukkit.craftbukkit.CraftServer.<init>(CraftServer.java:198)
        at net.minecraft.server.ServerConfigurationManagerAbstract.<init>(Server
ConfigurationManagerAbstract.java:50)
        at net.minecraft.server.ServerConfigurationManager.<init>(SourceFile:11)

        at net.minecraft.server.DedicatedServer.init(DedicatedServer.java:105)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:378)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)
Caused by: java.lang.ExceptionInInitializerError
        at clojure.lang.Namespace.<init>(Namespace.java:34)
        at clojure.lang.Namespace.findOrCreate(Namespace.java:176)
        at clojure.lang.Var.internPrivate(Var.java:149)
        at net.jonnay.watershipdown.WatershipDown.<clinit>(Unknown Source)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Unknown Source)
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j
ava:143)
        ... 9 more
Caused by: java.lang.RuntimeException: java.io.FileNotFoundException: Could not
locate clojure/core__init.class or clojure/core.clj on classpath:
        at clojure.lang.Util.runtimeException(Util.java:165)
        at clojure.lang.RT.<clinit>(RT.java:319)
        ... 16 more
Caused by: java.io.FileNotFoundException: Could not locate clojure/core__init.cl
ass or clojure/core.clj on classpath:
        at clojure.lang.RT.load(RT.java:430)
        at clojure.lang.RT.load(RT.java:398)
        at clojure.lang.RT.doInit(RT.java:434)
        at clojure.lang.RT.<clinit>(RT.java:316)
        ... 16 more
00:44:38 [INFO] [GroupManager] Loading GroupManager v2.0 (2.9.2) (Phoenix)