There seems to be a conflict between AI1EC and Jigoshop
The error only appears when AI1EC is active - Here is the error that appears:
Fatal error: jigoshop_cart::calculate_cart_total() [jigoshop-cart.calculate-cart-total]: The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "jigoshop_product" of the object you are trying to operate on was loaded before unserialize() gets called or provide a __autoload() function to load the class definition in /plugins/jigoshop/classes/jigoshop_cart.class.php on line 442
The Jigoshop support forums suggest there is a conflict with
session_start(); and that removing that line of code from your plugin might resolve things. I can't seem to find this code - any suggestions?
Here is a link to their forum post about it.
Any help/insights are greatly appreciated. Thanks.