Today, I created a bukkit server on minecraft so that my friends and I can play on it. I logged onto the server the first time with no problems. I exited out of the server.command as well as the game and when I opened it back up "Perhaps a server is already running on that port?" showed up when the server.command was loading, and when I tried to log into the server on my minecraft application "Failed to Connect to Server, Timed Out." showed up on my screen. I have not the slightest bit of explanation for this, and how do I get back on my server to play with my friends. ( I am on a mac if that helps)
Read more: Why can't I log onto my Bukkit Server?
