Perhaps a server is already running on that port? Mac.

I'm new to bukkit, and tried to install it. When I had run the server in terminal, this had come up.
Last login: Tue Jul 5 13:02:57 on ttys000 /Users/markus/Desktop/Bukkit\ Server/LaunchServer.command ; exit; bobs-computer-2:~ markus$ /Users/markus/Desktop/Bukkit\ Server/LaunchServer.command ; exit; 151 recipes 16 achievements 13:04:01 [INFO] Starting minecraft server version Beta 1.7.2 13:04:01 [INFO] Loading properties 13:04:01 [INFO] Starting Minecraft server on *:25565 13:04:02 [WARNING] **** FAILED TO BIND TO PORT! 13:04:02 [WARNING] The exception was: java.net.BindException: Address already in use 13:04:02 [WARNING] Perhaps a server is already running on that port? >

I don't have the regular minecraft server running, or even on my desktop. What should I do?

 

This happened to me, do macs have task managers? [Sorry I'm a windows not a mac] One time I discovered javaw.exe [server console] was running somehow when I tried to open server, I had the same error. I closed javaw.exe and it worked fine.

 

i have a mac and the same exact thing happens to me. You just have to turn off your computer and restart it. it should work fine.

 

I don't have a mac but i had this problem.
Double check the IP if its right, and if you port forwarded, make sure its on port 25565.