websocket.io - Can't find node install.js when installing

I'm trying to install websocket.io. I used the command >npm install websocket.io<, but it gives the following response:

npm ERR! ws@0.4.20 install: `node install.js`

npm ERR! `cmd "/c" "node install.js"` failed with 127

npm ERR!

npm ERR! Failed at the ws@0.4.20 install script.

npm ERR! This is most likely a problem with the ws package

npm ERR! not with npm itself.

npm ERR! Tell the author that this fails on your system:

npm ERR!     node install.js

npm ERR! You can get their info via:

npm ERR!     npm owner ls ws

npm ERR! There is likely additional logging output above.

What's the problem? What should I do?