Minecraft server s craftbukkit na verzi 1.6.4 přez hamachi - přestal fungovat

Ahoj potřebuju poradit s Minecraft serverem 1.6.4. Mám svůj soukromej server udělaný přez hamachi do doby než ho postavim a vychytám a už podruhé jsem musel změnit ip adresu na hamachi skrz to, že server při spuštění nenajede uplně a nedá se tam dostat vůbec. Vypíše se jen:

C:\Users\Jan\Desktop\mc 1.6.4>java -Xmx1024M -jar craftbukkit.jar
15:49:45 [INFO] Starting minecraft server version 1.6.4
15:49:45 [INFO] Loading properties
15:49:45 [INFO] Default game type: SURVIVAL
15:49:45 [INFO] Generating keypair
15:49:45 [INFO] Starting Minecraft server on 25.123.49.156:2565
15:49:45 [WARNING] **** FAILED TO BIND TO PORT!
15:49:45 [WARNING] The exception was: java.net.BindException: Cannot assign requested address: JVM_Bind
15:49:45 [WARNING] Perhaps a server is already running on that port?
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Když napíšu STOP tak to vypadá asi tak:

C:\Users\Jan\Desktop\mc 1.6.4>java -Xmx1024M -jar craftbukkit.jar
15:49:45 [INFO] Starting minecraft server version 1.6.4
15:49:45 [INFO] Loading properties
15:49:45 [INFO] Default game type: SURVIVAL
15:49:45 [INFO] Generating keypair
15:49:45 [INFO] Starting Minecraft server on 25.123.49.156:2565
15:49:45 [WARNING] **** FAILED TO BIND TO PORT!
15:49:45 [WARNING] The exception was: java.net.BindException: Cannot assign requested address: JVM_Bind
15:49:45 [WARNING] Perhaps a server is already running on that port?
>stop
15:58:11 [SEVERE] java.lang.NullPointerException
15:58:11 [SEVERE] at net.minecraft.server.v1_6_R3.DedicatedServer.as(De dicatedServer.java:259)
15:58:11 [SEVERE] at net.minecraft.server.v1_6_R3.DedicatedServer.a(Ded icatedServer.java:205)
15:58:11 [SEVERE] at net.minecraft.server.v1_6_R3.MinecraftServer.run(M inecraftServer.java:428)
15:58:11 [SEVERE] at net.minecraft.server.v1_6_R3.ThreadServerApplicati on.run(SourceFile:583)
15:58:11 [SEVERE] Encountered an unexpected exception NullPointerException
java.lang.NullPointerException
at net.minecraft.server.v1_6_R3.DedicatedServer.as(De dicatedServer.java:259)
at net.minecraft.server.v1_6_R3.DedicatedServer.a(Ded icatedServer.java:205)
at net.minecraft.server.v1_6_R3.MinecraftServer.run(M inecraftServer.java:428)
at net.minecraft.server.v1_6_R3.ThreadServerApplicati on.run(SourceFile:583)
15:58:11 [SEVERE] This crash report has been saved to: C:\Users\Jan\Desktop\mc 1.6.4\.\crash-reports\crash-2013-10-22_15.58.11-se rver.txt
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v přílozej e crash-report