Atom Version: 1.7.3
System: Mac OS X 10.11.3
Thrown From: w3c-validation package, v0.4.0
Stack Trace
Failed to load the w3c-validation package
At Cannot find module 'underscore-plus'
Error: Cannot find module 'underscore-plus'
at Module._resolveFilename (module.js:338:15)
at Function.Module._resolveFilename (/Applications/Atom.app/Contents/Resources/app.asar/src/module-cache.js:383:52)
at Function.Module._load (module.js:289:25)
at Module.require (module.js:366:17)
at require (/Applications/Atom.app/Contents/Resources/app.asar/src/native-compile-cache.js:50:27)
at Object.<anonymous> (/Users/prodesfin3/.atom/packages/w3c-validation/node_modules/atom-message-panel/node_modules/space-pen/lib/space-pen.js:8:9)
at Object.<anonymous> (/Users/prodesfin3/.atom/packages/w3c-validation/node_modules/atom-message-panel/node_modules/space-pen/lib/space-pen.js:627:4)
at Module._compile (/Applications/Atom.app/Contents/Resources/app.asar/src/native-compile-cache.js:103:30)
at Object.defineProperty.value [as .js] (/Applications/Atom.app/Contents/Resources/app.asar/src/compile-cache.js:208:21)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:313:12)
at Module.require (module.js:366:17)
at require (/Applications/Atom.app/Contents/Resources/app.asar/src/native-compile-cache.js:50:27)
at Object.<anonymous> (/Users/prodesfin3/.atom/packages/w3c-validation/node_modules/atom-message-panel/lib/MessagePanelView.js:4:7)
at Module._compile (/Applications/Atom.app/Contents/Resources/app.asar/src/native-compile-cache.js:103:30)
at Object.defineProperty.value [as .js] (/Applications/Atom.app/Contents/Resources/app.asar/src/compile-cache.js:208:21)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:313:12)
at Module.require (module.js:366:17)
at require (/Applications/Atom.app/Contents/Resources/app.asar/src/native-compile-cache.js:50:27)
at Object.<anonymous> (/Users/prodesfin3/.atom/packages/w3c-validation/node_modules/atom-message-panel/lib/index.js:2:21)
at Module._compile (/Applications/Atom.app/Contents/Resources/app.asar/src/native-compile-cache.js:103:30)
at Object.defineProperty.value [as .js] (/Applications/Atom.app/Contents/Resources/app.asar/src/compile-cache.js:208:21)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:313:12)
at Module.require (module.js:366:17)
at require (/Applications/Atom.app/Contents/Resources/app.asar/src/native-compile-cache.js:50:27)
at Object.<anonymous> (/Users/prodesfin3/.atom/packages/w3c-validation/lib/validator.js:7:25)
at Module._compile (/Applications/Atom.app/Contents/Resources/app.asar/src/native-compile-cache.js:103:30)
at Object.defineProperty.value [as .js] (/Applications/Atom.app/Contents/Resources/app.asar/src/compile-cache.js:208:21)
Did you try going into the package folder and running npm install && apm link? I didn't have this exact error but I had something similar and that fixed it.
[Enter steps to reproduce below:]
Atom Version: 1.7.3 System: Mac OS X 10.11.3 Thrown From: w3c-validation package, v0.4.0
Stack Trace
Failed to load the w3c-validation package
Commands
Config
Installed Packages