Keep in mind that the woodworker 2/3-glitch is also just a "screen-glitch" which means as long as you have the entry in the logbook it does count towards the achievement. I had the same problem but the achievement unlocked without a problem after successfully scanning everybody.
I also can confirm that using a pivot hack will prvent you from obtaining any achievements.
100% Retail Games incl. all DLC:
GTA 5 * Far Cry 3 * Assassin's Creed 3, 2, 1 * L.A: Noire * Red Dead Redemption * Dead Rising 2, Case West, Case 0 * Mafia II * Alan Wake * Bioshock * Bully * Beautiful Katamari