Hi Jay,
Process modeling requires that the products that you use are predefined as product types, and then created with a product creator. The older feeder components are using a component creator instead of a product creator, and thus cannot create products. The more recent feeder components that are in the Process Flow Components collection can create products.
The simplest way would be to change the advanced feeder to a process modeling suitable feeder. Another option that you have is to use the ‘to product converter’ to convert the component created by advanced feeder to products that can be used in process modeling. You can download the to product converter from here: Convert components to products
I tested your layout with the converter and now it seems to work as intended. Model_Manual.vcmx (4.0 MB)
I hope this helps.
-Este