You must have something already runnin on that port.. Try a Reboot, or turn off what ever application you have running that is using that port,...
Downloaded and Tried craftbukkit-1.2.4-R1.0.jar craftbukkit-1.2.3-R0.2.jar craftbukkit-1.2.5-R0.1-20120330.214528-2.jar Bat: @Echo OFF SET...
Separate names with a comma.