Server Corruption - Please help!

Okay thanks for trying

Alright, then i'm afraid it's beyond me; we'll have to wait for somebody more experienced to come along. For when they arrive, here's the crash log from the client:
http://pastebin.com/S93kfax5

Sorry I could not help you further

I did reinstall it, and the same problem occurs. Here's what happened: I reloaded the server, and it crashed. When I rejoined, I crashed myself because I believe I was in a corrupted area. I tried reloading it again, using a new .jar, using Chunkster, and nothing worked.

Hi,

I recommend that you re-download the craftbukkit.jar again and attempt to reinstall it. What exactly caused this to begin happening?

This is what it says when it a player crashes, and it seems to start up fine.

09.12 05:12:09 [Server] INFO ... 21 more
09.12 05:12:09 [Server] INFO at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
09.12 05:12:09 [Server] INFO at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
09.12 05:12:09 [Server] INFO at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:29)
09.12 05:12:09 [Server] INFO at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:34)
09.12 05:12:09 [Server] INFO Caused by: java.lang.ClassNotFoundException: net.minecraft.server.Entity
09.12 05:12:09 [Server] INFO ... 14 more
09.12 05:12:09 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:339)
09.12 05:12:09 [Server] INFO at java.lang.reflect.Method.invoke(Method.java:601)
09.12 05:12:09 [Server] INFO at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
09.12 05:12:09 [Server] INFO at sun.reflect.GeneratedMethodAccessor18.invoke(Unknown Source)
09.12 05:12:09 [Server] INFO at fr.neatmonster.nocheatplus.checks.moving.MovingListener.onPlayerMove(MovingListener.java:328)
09.12 05:12:09 [Server] INFO at fr.neatmonster.nocheatplus.checks.moving.MovingData.getData(MovingData.java:54)
09.12 05:12:09 [Server] INFO at fr.neatmonster.nocheatplus.checks.moving.MovingData.<init>(MovingData.java:106)
09.12 05:12:09 [Server] INFO Caused by: java.lang.NoClassDefFoundError: net/minecraft/server/Entity
09.12 05:12:09 [Server] INFO at net.minecraft.server.v1_4_5.ThreadServerApplication.run(SourceFile:856)
09.12 05:12:09 [Server] INFO at net.minecraft.server.v1_4_5.MinecraftServer.run(MinecraftServer.java:426)
09.12 05:12:09 [Server] INFO at net.minecraft.server.v1_4_5.MinecraftServer.q(MinecraftServer.java:493)
09.12 05:12:09 [Server] INFO at net.minecraft.server.v1_4_5.DedicatedServer.r(DedicatedServer.java:222)
09.12 05:12:09 [Server] INFO at net.minecraft.server.v1_4_5.MinecraftServer.r(MinecraftServer.java:595)
09.12 05:12:09 [Server] INFO at net.minecraft.server.v1_4_5.DedicatedServerConnection.b(SourceFile:30)
09.12 05:12:09 [Server] INFO at net.minecraft.server.v1_4_5.ServerConnection.b(SourceFile:39)
09.12 05:12:09 [Server] INFO at net.minecraft.server.v1_4_5.NetServerHandler.d(NetServerHandler.java:113)
09.12 05:12:09 [Server] INFO at net.minecraft.server.v1_4_5.NetworkManager.b(NetworkManager.java:290)
09.12 05:12:09 [Server] INFO at net.minecraft.server.v1_4_5.Packet10Flying.handle(SourceFile:136)
09.12 05:12:09 [Server] INFO at net.minecraft.server.v1_4_5.NetServerHandler.a(NetServerHandler.java:221)
09.12 05:12:09 [Server] INFO at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
09.12 05:12:09 [Server] INFO at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
09.12 05:12:09 [Server] INFO at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
09.12 05:12:09 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:341)
09.12 05:12:09 [Server] INFO org.bukkit.event.EventException
09.12 05:12:09 [Server] SEVERE Could not pass event PlayerMoveEvent to NoCheatPlus v3.7.3-b111

Hi,

Both when you startup the server and when players crash, what is the output on console?