Can you copy the good PDF from other computer to your computer where it is not working and check if all components are still visible ?
Yes, it works without section view. One of the parts has small engravings that come out as a fault. It shouldn't be a problem because another assembly with the same part saves fine.
I would still fix the model.
Could be as easy as clicking the Heal Body Faults on the Geometry Inspector.
Or try the Inspect->Optimize.
Could be a combination of the geometry problem and the section view.