I have been working with Meteor apps for a few months. For the first time, anytime I try to run a meteor app, install via (curl https://install.meteor.com | /bin/sh) or run
Try restarting your computer/reloading a terminal because the new meteor is installed in a new location too (it looks like yours is still at /usr/local instead of ~/.meteor)
If that doesn't work install fibers with npm install fibers@1.0.0 -g.