Bukkit

What steps will reproduce the problem?
1. update bukkit to 1.4.5 r1 beta
2. start server

What is the expected output? What do you see instead?
Should load fine, but get this during startup.

2012-12-22 12:11:19 [SEVERE] Could not load 'plugins/V10verlap.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: net/minecraft/server/World
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:184)
        at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:305)
        at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:230)
        at org.bukkit.craftbukkit.v1_4_6.CraftServer.loadPlugins(CraftServer.java:235)
        at org.bukkit.craftbukkit.v1_4_6.CraftServer.<init>(CraftServer.java:213)
        at net.minecraft.server.v1_4_6.PlayerList.<init>(PlayerList.java:52)
        at net.minecraft.server.v1_4_6.DedicatedPlayerList.<init>(SourceFile:11)
        at net.minecraft.server.v1_4_6.DedicatedServer.init(DedicatedServer.java:104)
        at net.minecraft.server.v1_4_6.MinecraftServer.run(MinecraftServer.java:399)
        at net.minecraft.server.v1_4_6.ThreadServerApplication.run(SourceFile:849)
Caused by: java.lang.NoClassDefFoundError: net/minecraft/server/World
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:247)
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:173)
        ... 9 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.World
        at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader.java:70)
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:53)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
        ... 12 more

What version of the product are you using?
.7

Do you have an error log of what happened?
Posted it already

Please provide any additional information below.
Just updated and did a restart

Say thanks to bukkit. In the past I decided to not update this anymore in flavor of Inception, they broke it now cause of their stupidness.

Bah just saw your post. So seems Inception is back then. I guess I will head back to that plugin.