Alex Limenko answer is right. I'm having this problem too. I was using the foundation 5.0.x (don't remember exactly which version, but certainly was an early 5). This morning I started to update my JS files to 5.2.1.

All my JS stopped working and no warning at all. After a few hours searching for a solution I decided to update the css files as well. Now it works.

Note: I'm working with foundation gem (compass).

Update css or scss files as well.
And it will be ok.

Hi, is there any specific scss/css file that I should be looking at or that you know causes issue.
I use scss and only import certain components, I also have made a number of customisations to the scss files so don't really want to overwrite those.

Also when I said previous version I meant 5.1.0 not 4

Chrome reports the following error:

Syntax error, unrecognized expression: [data-'Times New Roman'-joyride]

this appears to be the same issue as here
http://foundation.zurb.com/forum/posts/2112-foundation-5100-syntax-error-in-js

I had the same problem and fixed the javascript error by adding

html{
font-family: Arial;
}

No javascript errors anymore but interchange still doesn't work, but guess that's another problem.

Hi, can you post what your script tags look like. I cannot replicate the error in 5.1.1 upgraded with the CLI.