Slider working only on homepage

I kind of found the problem, on the pages where the slider isn’t working, on the console it says this error: $n(…).jCarouselLite is not a function, more precisely here:

$n(“.mainSliderDiv”).jCarouselLite({
btnNext: “.next”,
btnPrev: “.prev”,
<?php if($settings[‘auto’]){?>
auto: <?php echo $settings[‘speed’]; ?>,
<?php } ?>
speed: <?php echo $settings[‘speed’]; ?>,
<?php if($settings[‘pauseonmouseover’] and $settings[‘auto’]){ ?>
hoverPause: true,
<?php }else{ if($settings[‘auto’]){?>
hoverPause: false,
<?php }} ?>
circular: <?php echo ($settings[‘circular’])? ‘true’:’false’ ?>,
<?php if($settings[‘visible’]!=””){ ?>
visible: <?php echo $settings[‘visible’].’,’; ?>
<?php } ?>
scroll: <?php echo $settings[‘scroll’]; ?>

});

I can’t see why this error shows only on some pages… Please help me with an idea..