Basic Drupal Commerce functions not being seen
I am getting the following error when invoking "commerce_cart_order_product_line_item_delete()" in a custom module i'm writing.
Fatal error: Call to undefined function commerce_entity_reference_delete() in /Users/[username]/Documents/Sites/[site_name]/profiles/commerce_kickstart/modules/contrib/commerce/modules/cart/commerce_cart.module on line 1268
The "commerce_entity_reference_delete()" function that Drupal claims it can't find resides in:
...which, if I understand correctly is THE main commerce module that makes the whole shopping cart functionality work. So... my commerce module is enabled (because my shopping cart is working, and which is confirmed also on the Modules page), so why isn't commerce.module serving up the function above for me?
Am I not allowed to call "commerce_cart_order_product_line_item_delete()" from a custom module?
Desperately looking for a solution... thanks!