Problème run.bat serveur craftbukkit: failed to bind to port

Bonjour,

Quand j' ouvre mon serveur craftbukkit 1.5.1 (le run.bat) ça me met ce message: failed to bind to port.

Voici mon log:

2013-04-17 18:43:05 [INFO] Starting minecraft server version 1.5.1
2013-04-17 18:43:05 [INFO] Loading properties
2013-04-17 18:43:05 [INFO] Default game type: SURVIVAL
2013-04-17 18:43:05 [INFO] Generating keypair
2013-04-17 18:43:06 [INFO] Starting Minecraft server on 123456789:12345
2013-04-17 18:43:06 [WARNING] **** FAILED TO BIND TO PORT!
2013-04-17 18:43:06 [WARNING] The exception was: java.net.BindException: Cannot assign requested address: JVM_Bind
2013-04-17 18:43:06 [WARNING] Perhaps a server is already running on that port?
2013-04-17 18:43:14 [SEVERE] java.lang.NullPointerException
2013-04-17 18:43:14 [SEVERE] at net.minecraft.server.v1_5_R2.DedicatedServer.am(DedicatedServer.java:257)
2013-04-17 18:43:14 [SEVERE] at net.minecraft.server.v1_5_R2.DedicatedServer.a(DedicatedServer.java:203)
2013-04-17 18:43:14 [SEVERE] at net.minecraft.server.v1_5_R2.MinecraftServer.run(MinecraftServer.java:416)
2013-04-17 18:43:14 [SEVERE] at net.minecraft.server.v1_5_R2.ThreadServerApplication.run(SourceFile:573)
2013-04-17 18:43:14 [SEVERE] Encountered an unexpected exception NullPointerException
java.lang.NullPointerException
at net.minecraft.server.v1_5_R2.DedicatedServer.am(DedicatedServer.java:257)
at net.minecraft.server.v1_5_R2.DedicatedServer.a(DedicatedServer.java:203)
at net.minecraft.server.v1_5_R2.MinecraftServer.run(MinecraftServer.java:416)
at net.minecraft.server.v1_5_R2.ThreadServerApplication.run(SourceFile:573)
2013-04-17 18:43:14 [SEVERE] This crash report has been saved to: C:\Users\Louis\Desktop\serveur minecraft\.\crash-reports\crash-2013-04-17_18.43.14-server.txt
2013-04-17 18:43:24 [INFO] Stopping server
2013-04-17 18:43:24 [INFO] Saving worlds
2013-04-17 18:43:24 [INFO] Stopping server

Je n' ai aucun modes ni plugins.
Aidez-moi !!!!