$ npm install
npm WARN package.json project-name@1.0.0 No repository field.
npm WARN optional dep failed, continuing fsevents@1.0.8
npm WARN engine is-buffer@1.1.3: wanted: {"node":">=0.12"} (current: {"node":"0.10.33","npm":"1.4.28"})
npm WARN engine is-buffer@1.1.3: wanted: {"node":">=0.12"} (current: {"node":"0.10.33","npm":"1.4.28"})
npm WARN engine is-buffer@1.1.3: wanted: {"node":">=0.12"} (current: {"node":"0.10.33","npm":"1.4.28"})
npm WARN engine is-buffer@1.1.3: wanted: {"node":">=0.12"} (current: {"node":"0.10.33","npm":"1.4.28"})
npm WARN engine is-buffer@1.1.3: wanted: {"node":">=0.12"} (current: {"node":"0.10.33","npm":"1.4.28"})
npm ERR! Error: EPERM, open 'C:\Users\username\AppData\Roaming\npm-cache\f1c9fdf5-cache-inherits-2-0-1-package-tgz.lock'
npm ERR!  { [Error: EPERM, open 'C:\Users\username\AppData\Roaming\npm-cache\f1c9fdf5-cache-inherits-2-0-1-package-tgz.lock']
npm ERR!   errno: 50,
npm ERR!   code: 'EPERM',
npm ERR!   path: 'C:\\Users\\username\\AppData\\Roaming\\npm-cache\\f1c9fdf5-cache-inherits-2-0-1-package-tgz.lock' }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.
 
npm ERR! System Windows_NT 6.1.7601
npm ERR! command "c:\\Program Files\\nodejs\\node.exe" "c:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "install"
npm ERR! cwd c:\pv\www\project-name
npm ERR! node -v v0.10.33
npm ERR! npm -v 1.4.28
npm ERR! path C:\Users\username\AppData\Roaming\npm-cache\f1c9fdf5-cache-inherits-2-0-1-package-tgz.lock
npm ERR! code EPERM
npm ERR! errno 50
npm ERR! stack Error: EPERM, open 'C:\Users\username\AppData\Roaming\npm-cache\f1c9fdf5-cache-inherits-2-0-1-
package-tgz.lock'
npm ERR! not ok code 0

npm ERR! Linux 3.13.0-36-generic
npm ERR! argv "node" "/usr/bin/npm" "install"
npm ERR! node v0.10.32
npm ERR! npm  v2.1.0
npm ERR! path /home/user/.npm/4c25afa1-ncis-npm-vinyl-0-4-3-package-tgz.lock
npm ERR! code EEXIST
npm ERR! errno 47