Using 5179 with the 5.17.10 snapshot from Dec 4th (I needed some of the fixes for my L6 character). When I updated the XP (from 15 to 16) PCGen told me "Congratulations, you can advance with that much experience!" Wrong! I doubled checked and leveling up is set to PFS rules, so next level up is at 18.
Pathfinder Core, APG, PFS
verified in 51710 overnight build 2012-01-07