Please Help! NPC Citizens problem!

Please Help! NPC Citizens problem!

www.youtube.com/watch?v=n02Guo-2vJA&feature=youtu.be

My main problem is that the traders doesn't work. They all have the same skin, they have "eh15" or "??15" infront of their actual name, i cant select any of the npc's for editing, i cant use them as they are (Wont open traders "chest" to buy things). However, the talking function is working. All of them are talking as they should when i pass them or look at them.

I am running Citizens Beta 2.0 (Yes, i know that it is an unstable build) since it was the only build that was able to at all show my NPC's. At the "1.2 Build" the NPC's won't even show up. And i only get the: "java.lang.classcastexception java.lang.string cannot be cast to java.lang.boolean" error when i try to create a new one. I have been using google for a solution for days without luck. My Bukkit build is 1.2.5 i think.

So, guys. Any solutions?

EDIT by Moderator: merged posts, please use the edit button instead of double posting.