Bukkit

What steps will reproduce the problem?
1. When I start my server, all the other plugins load normally, but this won't.

What is the expected output? What do you see instead?
I think it should say something like: Loaded successfully or something like that. Instead: see log.

What version of the product are you using?
Lates, downloaded it more times.

Do you have an error log of what happened?
Here:
[19:13:58] [Server thread/ERROR]: ebean.properties not found
[19:13:58] [Server thread/INFO]: DataSourcePool [NexDistanceFarm] autoCommit[false] transIsolation[SERIALIZABLE] min[2] max[20]
[19:13:58] [Server thread/INFO]: SubClassFactory parent ClassLoader [org.bukkit.plugin.java.PluginClassLoader]
[19:13:59] [Server thread/INFO]: Registering Joda data types
[19:13:59] [Server thread/ERROR]: Could not load 'plugins/NexDistanceFarm.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: org/joda/time/LocalDateTime
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:328) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at org.bukkit.craftbukkit.v1_7_R1.CraftServer.loadPlugins(CraftServer.java:350) [server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at org.bukkit.craftbukkit.v1_7_R1.CraftServer.<init>(CraftServer.java:312) [server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at net.minecraft.server.v1_7_R1.PlayerList.<init>(PlayerList.java:63) [server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at net.minecraft.server.v1_7_R1.DedicatedPlayerList.<init>(SourceFile:14) [server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at net.minecraft.server.v1_7_R1.DedicatedServer.init(DedicatedServer.java:126) [server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:424) [server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
Caused by: java.lang.NoClassDefFoundError: org/joda/time/LocalDateTime
    at com.avaje.ebeaninternal.server.type.DefaultTypeManager.initialiseJodaTypes(DefaultTypeManager.java:633) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at com.avaje.ebeaninternal.server.type.DefaultTypeManager.<init>(DefaultTypeManager.java:165) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at com.avaje.ebeaninternal.server.core.InternalConfiguration.<init>(InternalConfiguration.java:137) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at com.avaje.ebeaninternal.server.core.DefaultServerFactory.createServer(DefaultServerFactory.java:209) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at com.avaje.ebeaninternal.server.core.DefaultServerFactory.createServer(DefaultServerFactory.java:64) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at com.avaje.ebean.EbeanServerFactory.create(EbeanServerFactory.java:78) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at org.bukkit.plugin.java.JavaPlugin.init(JavaPlugin.java:296) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at org.bukkit.plugin.java.PluginClassLoader.initialize(PluginClassLoader.java:104) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at org.bukkit.plugin.java.JavaPlugin.<init>(JavaPlugin.java:59) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at com.nexzed.NDFDistanceFarm.NexDistanceFarm.<init>(NexDistanceFarm.java:34) ~[NexDistanceFarm%20(1).jar:?]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.7.0_45]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) ~[?:1.7.0_45]
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.7.0_45]
    at java.lang.reflect.Constructor.newInstance(Constructor.java:526) ~[?:1.7.0_45]
    at java.lang.Class.newInstance(Class.java:374) ~[?:1.7.0_45]
    at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:52) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    ... 9 more
Caused by: java.lang.ClassNotFoundException: org.joda.time.LocalDateTime
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366) ~[?:1.7.0_45]
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355) ~[?:1.7.0_45]
    at java.security.AccessController.doPrivileged(Native Method) ~[?:1.7.0_45]
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354) ~[?:1.7.0_45]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425) ~[?:1.7.0_45]
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) ~[?:1.7.0_45]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ~[?:1.7.0_45]
    at com.avaje.ebeaninternal.server.type.DefaultTypeManager.initialiseJodaTypes(DefaultTypeManager.java:633) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at com.avaje.ebeaninternal.server.type.DefaultTypeManager.<init>(DefaultTypeManager.java:165) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at com.avaje.ebeaninternal.server.core.InternalConfiguration.<init>(InternalConfiguration.java:137) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at com.avaje.ebeaninternal.server.core.DefaultServerFactory.createServer(DefaultServerFactory.java:209) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at com.avaje.ebeaninternal.server.core.DefaultServerFactory.createServer(DefaultServerFactory.java:64) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at com.avaje.ebean.EbeanServerFactory.create(EbeanServerFactory.java:78) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at org.bukkit.plugin.java.JavaPlugin.init(JavaPlugin.java:296) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at org.bukkit.plugin.java.PluginClassLoader.initialize(PluginClassLoader.java:104) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at org.bukkit.plugin.java.JavaPlugin.<init>(JavaPlugin.java:59) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at com.nexzed.NDFDistanceFarm.NexDistanceFarm.<init>(NexDistanceFarm.java:34) ~[NexDistanceFarm%20(1).jar:?]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.7.0_45]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) ~[?:1.7.0_45]
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.7.0_45]
    at java.lang.reflect.Constructor.newInstance(Constructor.java:526) ~[?:1.7.0_45]
    at java.lang.Class.newInstance(Class.java:374) ~[?:1.7.0_45]
    at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:52) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[server.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
    ... 9 more

Please provide any additional information below.
I have nothing more to say, expecting help :)