While some vp8 tables may play in vp9 they really should be used with their respective programs. the reason being, vp9 uses a bigger ball so any vp8 table that has wide enough lanes and no ramps or plastics for the ball to get stuck on/under would feasibly work in vp9. but why bother with the hassle? just remember to stick the right (downloaded) table into its proper folder and you'll have no worries.