Latest update to https://github.com/lelylan/simple-oauth2 switches to Promises/Async breaking the callbacks used in /lib/init/lwa.js and elsewhere
Fixed, upgrade ask-cli to latest version via npm, ignore below.
Until fixed, the simple-oauth2 dependency can be reverted to version 1.5.0
change version in /usr/local/lib/node_modules/ask-cli/package.json from '^1.0.2' to '1.5.0'
then from the terminal in the directory run
More detailed instructions for fix: https://forums.developer.amazon.com/comments/119007/view.html