Cannot retrieve waterfall image - TypeError('invalid data') thrown in net.js

[teamaton]

Environment:
node -v -> v4.2.2
npm -v -> 2.9.1

Here's the command I'm executing:

webpagetest.cmd waterfall 151106_M0_P5Z

Here's the error I'm getting:

net.js:617
    throw new TypeError('invalid data');
    ^

TypeError: invalid data
    at WriteStream.Socket.write (net.js:617:11)
    at output (C:\Users\Oliver\AppData\Roaming\npm\node_modules\webpagetest\bin\webpagetest:27:18)
    at Function.formatData (C:\Users\Oliver\AppData\Roaming\npm\node_modules\webpagetest\bin\webpagetest:68:5)
    at callbackYield (C:\Users\Oliver\AppData\Roaming\npm\node_modules\webpagetest\lib\webpagetest.js:138:14)
    at WebPageTest.apiCallback (C:\Users\Oliver\AppData\Roaming\npm\node_modules\webpagetest\lib\webpagetest.js:207:7)
    at IncomingMessage.onEnd (C:\Users\Oliver\AppData\Roaming\npm\node_modules\webpagetest\lib\webpagetest.js:123:11)
    at emitNone (events.js:72:20)
    at IncomingMessage.emit (events.js:166:7)
    at endReadableNT (_stream_readable.js:905:12)
    at doNTCallback2 (node.js:441:9)

[bigethan]

Sometimes webpagetest doesn't make all the images - were you able to access the image by it's url from the response json?

[0liver]

Yes, the images were there when I accessed them through the browser.