Error when running npm install

641 verbose lock grunt-exec@0.4.7 /home/opensrf/.npm/55d1c329-grunt-exec-0-4-7.lock
642 silly lockFile 4aa4cef6--grunt-exec-grunt-exec-0-4-7-tgz https://registry.npmjs.org/grunt-exec/-/grunt-exec-0.4.7.tgz
643 verbose lock https://registry.npmjs.org/grunt-exec/-/grunt-exec-0.4.7.tgz /home/opensrf/.npm/4aa4cef6--grunt-exec-grunt-exec-0-4-7-tgz.lock
644 error TypeError: Object.keys called on non-object
644 error     at Function.keys (native)
644 error     at installTargetsError (/usr/share/npm/lib/cache.js:708:24)
644 error     at /usr/share/npm/lib/cache.js:638:10
644 error     at saved (/usr/share/npm/node_modules/npm-registry-client/lib/get.js:142:7)
644 error     at /usr/lib/nodejs/graceful-fs/polyfills.js:133:7
644 error     at Object.oncomplete (fs.js:107:15)
645 error If you need help, you may report this log at:
645 error     <http://github.com/isaacs/npm/issues>
645 error or email it to:
645 error     <npm-@googlegroups.com>
646 error System Linux 3.13.0-116-generic
647 error command "/usr/bin/nodejs" "/usr/bin/npm" "install"
648 error cwd /home/opensrf/Evergreen/Open-ILS/web/js/ui/default/staff
649 error node -v v0.10.25
650 error npm -v 1.3.10
651 error type called_on_non_object
652 verbose exit [ 1, true ]