I remember this happened a while back in Qantas. A classic departed out of Perth for Joburg without the appropriate charts.
Yep....the crew stuffed up. The person who signed the FSO folder (whoever that was) is probably the most to blame as it's his signature stating that the charts are on board.
However, to those who seem to be getting off on the fact that this Qantas crew and Qantas itself have been embarrassed, just remember. Aviation is all about making mistakes, recognizing them and then fixing them. I think we have all eaten a bit of humble pie over the years (with plenty left for seconds.....)