I'm getting the same error on OSX and Ubuntu when trying to install using: `sudo npm install -g webgl-workshop` ``` npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/3d-clear-depth npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/3d-cull-face npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/3d-depth-buffer npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/3d-front-face npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/blend-basics npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/buffer-attributes npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/buffer-create npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/buffer-draw npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/buffer-elements npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/buffer-interleaved npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/challenge-0 npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/challenge-1 npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/drawing-color-mask npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/drawing-line-width npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/intro-clear-color npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/intro-hello-webgl npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/intro-scissor npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/intro-viewport npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/shader-attributes npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/shader-create npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/shader-uniforms npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/stencil-shadows npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/texture-create npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/texture-mipmaps npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/texture-parameters npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/exercises/texture-units npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/workshop/common npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/workshop/compare npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/workshop/envify-files npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/workshop/exercise npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/workshop/exercise-ui npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/workshop/menu npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/workshop/server npm ERR! addLocal Could not install /usr/lib/node_modules/webgl-workshop/workshop/server-basic npm ERR! Linux 3.13.0-76-generic npm ERR! argv "node" "/usr/bin/npm" "install" "-g" "webgl-workshop" npm ERR! node v0.10.41 npm ERR! npm v3.6.0 npm ERR! path /usr/lib/node_modules/webgl-workshop/exercises/3d-clear-depth npm ERR! code ENOENT npm ERR! errno 34 npm ERR! enoent ENOENT, open '/usr/lib/node_modules/webgl-workshop/exercises/3d-clear-depth' npm ERR! enoent ENOENT, open '/usr/lib/node_modules/webgl-workshop/exercises/3d-clear-depth' npm ERR! enoent This is most likely not a problem with npm itself npm ERR! enoent and is related to npm not being able to find a file. npm ERR! enoent npm ERR! Please include the following file with any support request: npm ERR! /home/jeff/npm-debug.log ```