[Help Wordpress] Adding slider index to wordpress gives a JS error

Hi there,

I'm using the wordpress version of the slider, and I'd like to add a slider index, and based on this page

http://help.dimsemenov.com/kb/royalslider-javascript-api/creating-s...

it looks like I need to add this JS

https://gist.github.com/dimsemenov/a7b24018528bbc06874b

to the page. No problem., except that the JS is giving an error in the console:

Uncaught TypeError: Cannot read property 'ev' of undefined createIndicator (anonymous function)

which seems to be referring to line 12:

slider.ev.on('rsAfterSlideChange', updCount);

Any idea on what could be at fault here?

.

help.dimsemenov.com