Dev-ip errors during npm install

Windows 10 (Host)
Vagrant Version: 1.7.4
Ubuntu Version: 3.13.0-63-generic (trusty 64)
Node Version: 4.1.0
Npm Version: 3.3.3

When I am at the step where I run npm install in the sage theme directory, I see:

npm ERR! Linux 3.13.0-63-generic
npm ERR! argv “/usr/bin/nodejs” “/usr/bin/npm” "install"
npm ERR! node v4.1.0
npm ERR! npm v3.3.3
npm ERR! path …/dev-ip/lib/dev-ip.js
npm ERR! code EPROTO
npm ERR! errno -71
npm ERR! syscall symlink

npm ERR! EPROTO: protocol error, symlink ‘…/dev-ip/lib/dev-ip.js’ -> '/vagrant/site/web/app/themes/inchorus/node_modules/.bin/dev-ip’
npm ERR!
npm ERR! If you need help, you may report this error at:
npm ERR! https://github.com/npm/npm/issues
npm ERR! Linux 3.13.0-63-generic
npm ERR! argv “/usr/bin/nodejs” “/usr/bin/npm” "install"
npm ERR! node v4.1.0
npm ERR! npm v3.3.3
npm ERR! path npm-debug.log.749bd9962d2301b21c17a6160eee5e09
npm ERR! code ETXTBSY
npm ERR! errno -26
npm ERR! syscall rename

npm ERR! ETXTBSY: text file is busy, rename ‘npm-debug.log.749bd9962d2301b21c17a6160eee5e09’ -> 'npm-debug.log’
npm ERR!
npm ERR! If you need help, you may report this error at:
npm ERR! https://github.com/npm/npm/issues

npm ERR! Please include the following file with any support request:
npm ERR! /vagrant/site/web/app/themes/inchorus/npm-debug.log

Resolved. Had to use nvm to install 0.12 based on some updates on here (instead of 4.1.0) and use the symlink fix for Windows’ node_modules.