Yeah. I'm at A-4 in the Netherrealm and I've been meditaiting like a madman, still no sign of it.
Any particular time/location?

go on the other side of the wall, you will see Night Wolf, Fight him

I dont want to make another post. I feel im being annoying about making this one... How do I find Jade's alt costume?

I had the same problem with these two guys
first you have to find nightwolf and do a mission for him. as soon as you exit the walls take an imidate left and you'll find him. He will ask you to find and artifact for him. I found the guy that stole it next to a bridge.Give the artifact back to him. After that leave that realm and return again and you'll be able fo fight him
for jade you have to do the same. She is all the way to the left and somewhat to the bottom. She will ask you to find a cave to capture liu kang. Find the cave (its inside the one of the towns) return to jade exit the realm and when you return you'll be able to fight her.