404 error for deferredfunctions.js

Hi, I have been playing with the settings of w3 total cache, especially minification and deferring js files... Today I noticed that deferredfunctions.js file is missing- 404 error in the error/code inspector. I deactivated w3 total cache, but the error is still there.

Strange... Can anyone help me figure out where this is coming from?

My site is: http://haveagelessskin.com