Given that proficiency in instrument flying and approaches are checked at every PC and NPA's are normally covered in PTs, it is strange that incidents like these are still happening in the developed world. Maybe they are so good at visual flying that complacency set in, when instrument approaches are deemed to be a walk in the park!
However I think the pilots had more instrument approaches under their belts than visual approaches and it is baffling how a localiser approach could be so badly stuffed up? Maybe some electronic interference from an active system in their freight or l@ser light interference from the ground? I believe the pilots were highly experienced and very competent, so pilot error must be a very very remote possibility!