Q18: Psionic power Thicken Skin grants "a +1 enhancement bonus to your Armor Class." (SRD and elsewhere), not to natural armor bonus, as does the Barkskin spell. "Armor bonuses stack with all other bonuses to armor class ... except other armor bonuses."
Thicken Skin does not stack with other AC bonus, e.g., from armor?
Is that an oversight/errata'd, or do you play it that way?
thanks tertiarily!