JS Console Error TypeError: el.data(...).toInt is not a function

[greenleafmedia]

Tried installing and using JV Gallery today and when I attempt to load up the article with JV Gallery in it, I receive the following console error: TypeError: el.data(...).toInt is not a function

Coming from gallery.js:

el.imagesLoaded( function(){
if(el.data('grid') == 'fluid'){
el.find('li').css({widthel.data('col_width').toInt()) - (el.data('gutter').toInt()) + '%'});
}else{
el.find('li').css({widthel.data('col_width').toInt()) - (el.data('gutter').toInt())});
}