[Plugin: TBTestimonials] Loader causing an issue

Hello,

I’m getting the following error when plugin is installed and was hoping you can help me. The file *does* exist. I’m using multisite with WP and wondering if that’s causing the issue but not sure.

You can see the same error going here:
http://www.grahaminsuranceonline.com/
—-

http://www.grahaminsuranceonline.com/wp-content/plugins/tb-testimonials/inc/i/loaders/loader_default.gif
Warning: loader_default.gif is not a valid file or url in /home/myaccub/public_html/wp-content/plugins/tb-testimonials/tb-testimonials.php on line 920

Fatal error: Unsupported operand types in /home/myaccub/public_html/wp-content/plugins/tb-testimonials/tb-testimonials.php on line 871

—-

Can you help on this one? Thanks!