Fatal error: Unsupported operand types in /path/to/wordpress/wp-content/plugins/tb-testimonials/tb-testimonials.php on line 899
We are using the Testimonials plugin in the footer, and on the checkout page using Shopp Plugin and SSL enabled, we get the above error.
It is easily fixed though, by replacing line 899 (and line 908) with:
if( is_object( $preloader_obj) ) $preloaders += $preloader_obj;
Just thought I'd bring this up so maybe future versions can be updated? I had fixed this once, but an upgrade erased my fix.