If I instantiate like this: bigCarousel = new UI.Carousel(“bigImage”, {previousButton: false, nextButton: false});

then if will have the following error:

this.previousButton has no properties if (this.previousButton.hasClassName(previousClassName) && position != 0) {

So I changed this inside the library:

updateButtons: function() {
     if(this.previousButton){this.updatePreviousButton()}
   if(this.nextButton){this.updateNextButton()}
   return this;
 },