I don't know anim8or but I do know you should export with no normals at all if it's for poser. Poser doesn't use them but they can screw things up so they look inside out in preview mode. So uncheck the export normals box. I have no idea if that'll help. Maybe describe the effect? Black spots, inside out etc?

"Your work is to keep cranking the flywheel that turns the gears that spin the belt in the engine of belief that keeps you and your desk in midair."

Annie Dillard