Cannot read property 'messages' of undefined

[freeslugs]

• visited the website (http://ianobermiller.github.io/nuclearmail/#/)
• logged in with gmail
• immediate error

TypeError: Cannot read property 'messages' of undefined {stack: "TypeError: Cannot read property 'messages' of unde…nobermiller.github.io/nuclearmail/app.js:35:4752)", message: "Cannot read property 'messages' of undefined"}
 "TypeError: Cannot read property 'messages' of undefined
    at http://ianobermiller.github.io/nuclearmail/app.js:26:24669
    at Array.map (native)
    at Array.<anonymous> (http://ianobermiller.github.io/nuclearmail/app.js:10:12758)
    at i (http://ianobermiller.github.io/nuclearmail/app.js:26:24646)
    at http://ianobermiller.github.io/nuclearmail/app.js:26:24522
    at S (http://ianobermiller.github.io/nuclearmail/app.js:35:2297)
    at R (http://ianobermiller.github.io/nuclearmail/app.js:35:2383)
    at D (http://ianobermiller.github.io/nuclearmail/app.js:35:2200)
    at MutationObserver.Y (http://ianobermiller.github.io/nuclearmail/app.js:35:4752)"
(anonymous function)    @   app.js:14
Ne.trigger  @   app.js:35
(anonymous function)    @   app.js:35