Apps won't run on GAE - 'unable to bind to localhost:0'

Question

I recently upgraded Google App Engine to 1.7.7. and have not been able to run any apps locally since. This includes apps that worked before the update and apps I\'ve created

Answer 1

For people who got Unknown key when running fuser -k 8080/tcp, here is a solution which worked for me:

lsof -P | grep ':8080' | awk '{print $2}' | xargs kill -9