Grunt Install Error

$ npm install grunt
npm http GET https://registry.npmjs.org/grunt
npm http 304 https://registry.npmjs.org/grunt
npm http GET https://registry.npmjs.org/async
npm http GET https://registry.npmjs.org/coffee-script
npm http GET https://registry.npmjs.org/colors
npm http GET https://registry.npmjs.org/dateformat/1.0.2-1.2.3
npm http GET https://registry.npmjs.org/eventemitter2
npm http GET https://registry.npmjs.org/findup-sync
npm http GET https://registry.npmjs.org/glob
npm http GET https://registry.npmjs.org/hooker
npm http GET https://registry.npmjs.org/minimatch
npm http GET https://registry.npmjs.org/iconv-lite
npm http GET https://registry.npmjs.org/nopt
npm http GET https://registry.npmjs.org/rimraf
npm http GET https://registry.npmjs.org/underscore.string
npm http GET https://registry.npmjs.org/which
npm http GET https://registry.npmjs.org/lodash
npm http GET https://registry.npmjs.org/js-yaml
npm http 304 https://registry.npmjs.org/dateformat/1.0.2-1.2.3
npm http 304 https://registry.npmjs.org/coffee-script
npm http 304 https://registry.npmjs.org/eventemitter2
npm http 304 https://registry.npmjs.org/async
npm http 304 https://registry.npmjs.org/colors
npm http 304 https://registry.npmjs.org/findup-sync
npm http 304 https://registry.npmjs.org/glob
npm http 304 https://registry.npmjs.org/hooker
npm http 304 https://registry.npmjs.org/minimatch
npm http 304 https://registry.npmjs.org/iconv-lite
npm http 304 https://registry.npmjs.org/nopt
npm http 304 https://registry.npmjs.org/rimraf
npm http 304 https://registry.npmjs.org/underscore.string
unbuild grunt@0.4.1
npm http 304 https://registry.npmjs.org/which
npm ERR! Error: No compatible version found: underscore.string@'>=2.2.0-rc <2.3.0-0'
npm ERR! Valid install targets:
npm ERR! ["0.9.2","1.0.0","1.1.3","1.1.4","1.1.5","1.1.6","2.0.0","2.1.0","2.1.1","2.3.0","2.3.1","2.3.2"]
npm ERR!     at installTargetsError (/usr/local/lib/node_modules/npm/lib/cache.js:719:10)
npm ERR!     at next (/usr/local/lib/node_modules/npm/lib/cache.js:698:17)
npm ERR!     at /usr/local/lib/node_modules/npm/lib/cache.js:675:5
npm ERR!     at saved (/usr/local/lib/node_modules/npm/node_modules/npm-registry-client/lib/get.js:142:7)
npm ERR!     at Object.oncomplete (fs.js:107:15)
npm ERR! If you need help, you may report this log at:
npm ERR!     <http://github.com/isaacs/npm/issues>
npm ERR! or email it to:
npm ERR!     <npm-@googlegroups.com>

npm ERR! System Darwin 12.4.0
npm ERR! command "node" "/usr/local/bin/npm" "install" "grunt"
npm ERR! cwd /Volumes/hd3-case-sensitive/sites/yeoman-generators/test
npm ERR! node -v v0.10.13
npm ERR! npm -v 1.3.2
npm http 304 https://registry.npmjs.org/lodash
npm http 304 https://registry.npmjs.org/js-yaml
npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR!     /Volumes/hd3-case-sensitive/sites/yeoman-generators/test/npm-debug.log
npm ERR! not ok code 0