node.js - Google IO web app setup error -

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i have been trying setup google io web app learn more polymer framework uses. google made open source, have been trying download it, using instructions at: https://github.com/googlechrome/ioweb2015

as per instructions, have installed go 1.4.2, gcloud (and run update app command). completed first 3 of setup commands, when running 'gulp setup', following error:

[19:54:17] using gulpfile c:\polymer\ioweb2015\gulpfile.js [19:54:17] starting 'setup'... [19:54:17] starting 'bower'... [19:54:17] starting 'godeps'... [19:54:17] starting 'addgithooks'... events.js:85       throw er; // unhandled 'error' event         ^ error: spawn ../node_modules/bower/bin/bower enoent     @ exports._errnoexception (util.js:746:11)     @ process.childprocess._handle.onexit (child_process.js:1053:32)     @ child_process.js:1144:20     @ process._tickcallback (node.js:355:11)     @ function.module.runmain (module.js:503:11)     @ startup (node.js:129:16)     @ node.js:814:3

i have looked around, cannot find plausible cause of error. missing obvious, appreciate can give.

many thanks, --matt


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