Node v8.1.3 Windows 7 The socket.io library can't be found on the new version, not sure what's going on, https://github.com/djfarrelly/MailDev/commit/66d071ed806f063a894dccdae60870eb938461e3 seems to be the likely culprit Done some more testing on v1.0.0-rc2, running `maildev --base-pathname "/a/"` on Windows is broken, but running it on my Mac works 🤔 