Facebook plugin showing blank box in Firefox

I recently bought a plugin called “Aspexi Facebook Like Box Slider HD” (http://aspexi.com/downloads/aspexi-facebook-like-box-slider-hd/) for use on a blog project of mine and I don’t know if it’s a problem with Firefox or the plugin itself, but every time I view the slider, it shows up completely blank; box-wise in Firefox while in the likes of Chrome and IE, it seems to work fine although sometimes with IE, the plugin gets moved down to the bottom of the screen.

http://www.nekomimi-no-jinja.com/youtube-test-post/

I’ve cleaned out the cache in Firefox as well as using WP Super Cache to see if that would fix the problem but I’m still having the same problem.

If anyone can explain why I’m having this problem and how I can fix it, I’d be very grateful. :slight_smile: