Meteor guide version of Todo not working?

I’m working my way through the excellent meteor guide at present. It references the latest version of the todos app which is in this repo. I’ve cloned that locally and and tried to run it, and it does run, but none of the navigation works and the console shows this error:

Exception in template helper: ReferenceError: FlowRouter is not defined
at Object.pathFor (http://localhost:3000/packages/arillo_flow-router-helpers.js?hash=7af92dfaecd8249c8db525636d2f4684f935c8df:70:10)
at http://localhost:3000/packages/blaze.js?hash=e76a82c86454a0026705206840b750502195277b:2986:16
at http://localhost:3000/packages/blaze.js?hash=e76a82c86454a0026705206840b750502195277b:1650:16
at http://localhost:3000/packages/blaze.js?hash=e76a82c86454a0026705206840b750502195277b:3038:66
at Function.Template._withTemplateInstanceFunc (http://localhost:3000/packages/blaze.js?hash=e76a82c86454a0026705206840b750502195277b:3671:12)
at http://localhost:3000/packages/blaze.js?hash=e76a82c86454a0026705206840b750502195277b:3037:27
at Spacebars.call (http://localhost:3000/packages/spacebars.js?hash=7a1490de7ecaca4920f54c80341af1e4c5ef81ba:170:18)
at Spacebars.mustacheImpl (http://localhost:3000/packages/spacebars.js?hash=7a1490de7ecaca4920f54c80341af1e4c5ef81ba:104:25)
at Object.Spacebars.mustache (http://localhost:3000/packages/spacebars.js?hash=7a1490de7ecaca4920f54c80341af1e4c5ef81ba:108:39)
at HTML.A.href (http://localhost:3000/app/app.js?hash=229bc8a753558039cab46eb52ea121e0027bd8fc:949:30)

FlowRouter is seems to be there; I tried to add it again and Meteor wouldn’t let me.

To run it I’m just running the meteor command in the root of the directory. Am I doing something stupid/missing a trick?

Is flow-router-helpers package added, too?

Just checked and yes, it’s already there. Thanks for the suggestion.