Try $ sudo kill -9 2616 to kill the lighttpd process and run again. If your lighthttpd is still giving you issues check out the lighttpd log to see if you can get more descriptive information on why it won't start (you can use $ locate lighttpd.log to help)
Failing that, it might be more worth your time to re-download and attempt a fresh install. Sometimes it's just easier that way :)
Failing that, it might be more worth your time to re-download and attempt a fresh install. Sometimes it's just easier that way :)