the server don't start...

Hello, when i open start.command the terminal do this:

Code:

13:31:57 [INFO] Starting minecraft server version Beta 1.6.6
13:31:57 [INFO] Loading properties
13:31:57 [INFO] Starting Minecraft server on 10.120.168.225:25565
13:31:57 [AVVERTENZA] **** FAILED TO BIND TO PORT!
13:31:57 [AVVERTENZA] The exception was: java.net.BindException: Can't assign requested address
13:31:57 [AVVERTENZA] Perhaps a server is already running on that port?
>
13:43:02 [GRAVE] java.lang.NullPointerException
13:43:02 [GRAVE]     at net.minecraft.server.MinecraftServer.b(MinecraftServer.java:428)
13:43:02 [GRAVE]     at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:315)
13:43:02 [GRAVE]     at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)
13:43:02 [GRAVE] Unexpected exception
java.lang.NullPointerException
    at net.minecraft.server.MinecraftServer.b(MinecraftServer.java:428)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:315)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)
>
13:43:03 [INFO] Stopping server
13:43:03 [GRAVE] java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
13:43:03 [GRAVE]     at java.util.ArrayList.RangeCheck(ArrayList.java:547)
13:43:03 [GRAVE]     at java.util.ArrayList.get(ArrayList.java:322)
13:43:03 [GRAVE]     at net.minecraft.server.MinecraftServer.stop(MinecraftServer.java:269)
13:43:03 [GRAVE]     at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:339)
13:43:03 [GRAVE]     at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)
>logout

[Processo completato]

How do I fix this problem?

PS: Sorry for my bad English, I'm Italian.

I've a Mac.

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

You probably have something running on port 25565 already. Sometimes programs like Skype/Spotify/Utorrent grabs a random port and stays on that. Check if you have any programs running that uses open ports. If you can't find it manually, find a port mapping program that can tell you what ports are already taken.

 

dont put anything on your ip_adress on the server.properties

 

There isn't any program with the 25565 port.

Help :S

 

Have you forwarded your port? Also follow VirusSpreadeR's suggestion

 

I was getting the exact same error you were. I followed the suggestion above and removed my ip address from the "server-ip=" setting in the server.properties file. I was then able to start the server up without issue.