When using Emerald Ore blocks for stones, breaking it drops an emerald and xp instead of the original protection block. If I change the block to say #11 (lapis block) it correctly gives the block back on destroy.

Upgrade, this has already been fixed long ago.

yea this is with 9.4.0.. Unless there's something else to "upgrade" to :)

Ohhh you are right. I remember this. Yea this is a problem with bukkit. It does not allow drops of the ore itself. PS is already setup to drop ore, once bukkit fixes it on their side it will start working. For the time being don't use emerald ore.