Gulp sass doesn't work :(

When I run gulp I get this, and I have bower installed, any ideas?

ando:shootnshareionic andresgalante$ gulp sass

Error: Cannot find module 'bower’
at Function.Module._resolveFilename (module.js:338:15)
at Function.Module._load (module.js:280:25)
at Module.require (module.js:364:17)
at require (module.js:380:17)
at Object. (/Users/andresgalante/Documents/redhat/shot and share/shootnshareionic/gulpfile.js:3:13)
at Module._compile (module.js:456:26)
at Object.Module._extensions…js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Module.require (module.js:364:17)

Same error here, I’m in MacOSX Maverics.

bower is installed and working fine.