Because this writes paths with `\\` on Windows (i.e., `assets\\css\\main.min.css`), I'd recommend adding `grunt-text-replace` with the following task:

```js
    replace: {
      dist: {
        src: ['<%= filerev_assets.assets.options.dest %>'],
        overwrite: true,
        replacements: [{
          from: '\\\\',
          to: '/'
        }]
      }
    }
```

That completely resolved the issue for me.