When I install PM2 0.12.1 with the following and run pm2 list like this...

sudo npm install -g pm2
sudo pm2 startup ubuntu
pm2 list

I get the following error:

events.js:72
        throw er; // Unhandled 'error' event
              ^
Error: connect EACCES
    at errnoException (net.js:904:11)
    at Object.afterConnect [as oncomplete] (net.js:895:19)

However, if I go back to an older version which I have been using in production 0.9.6, then running the following:

sudo npm install -g pm2@0.9.6
sudo pm2 startup ubuntu
pm2 list

Then it works fine. If it's not a bug, then I'm unsure what I'm doing wrong. The docs indicate this should be pretty straight forward.

Any help would be most appreciated!