Meta Slider 2.8-beta stopped sliding after upgrade

Looking at the last JS error (TypeError: undefined is not a function), it points to this section of the page, specifically the line
$('#metaslider_1218').flexslider({
Full script:

<script type="text/javascript">
        var metaslider_1218 = function($) {
            $('#metaslider_1218').addClass('flexslider'); // theme/plugin conflict avoidance
            $('#metaslider_1218').flexslider({
                slideshowSpeed:4000,
                animation:"slide",
                controlNav:true,
                directionNav:true,
                pauseOnHover:true,
                direction:"horizontal",
                reverse:false,
                animationSpeed:600,
                prevText:"<",
                nextText:">",
                easing:"easeInQuad",
                slideshow:true,
                useCSS:false
            });
        };
        var timer_metaslider_1218 = function() {
            window.jQuery && jQuery.isReady ? metaslider_1218(window.jQuery) : window.setTimeout(timer_metaslider_1218, 1);
        };
        timer_metaslider_1218();
    </script>

Is there another JS file that needs to be included beforehand?

Fran

It’s probably not the best solution but, would it work if I added the metaslider js files to my functions.php file and register/enqueue from there?

Although, looking at the number of files in there, I’d either have to load them all or know which ones I need and not change the slider settings.

Fran

Update: I’ve manually added the script files under the call to wp_footer and now the slider works.

Not the most optimal solution, but at least it works now!
I tried disabling other plugins but couldn’t work out what was causing the problem.

Thanks,
Fran