Parts list not showing any components

Hello everyone,

I've been using AutoCAD and SolidWorks for most of the time, and currently trying to get used to Siemens NX 11.0. I've searched for the problem I'm encountering which is that there's no display of parts in my parts list.

I've adjusted the load options of the assembly. I changed the reference sets to entire part. I checked all layers and changed levels of the parts list.. so I'm not sure what's next.

Parts are not imported solid models. They're made into models using old .dwg files.

I've made a drawing of the same assembly before, but to keep testing all functions I created a new drawing of the assembly. I'm not sure if the fault lays here, and there's a missing link between the drawing and the assembly model? 

Attached is a screenshot of the parts list and assembly navigator.

(Note that this is purely for training purposes)