Bukkit

This server is running CraftBukkit version git-Spigot-33 (MC: 1.7.2) (Implementing API version 1.6.4-R2.1-SNAPSHOT)
Isolated, with no other plugins.
Permissions on and off (no difference either way)
also CraftBukkit version git-Spigot-1155 (MC: 1.7.2) (Implementing API version 1.7.2-R0.1-SNAPSHOT)

Created shop as described on plugin page. Able to create sign, get prompt to hit sign with item. Once hit, the item does hover over chest, but no other confirmation, Exception thrown.

Any other player is able to open shop-chest and edit chest like normal chest. Players are not able to buy/sell. If (any) player left-clicks the sign again, the held item is added to the "hover", this can be done with any item repeatedly. More exceptions thrown each time.

v1.4 bug fix (dropping similar item, pick both up) is not apparent here.
Console commands /shop, /shop list, etc return nothing (other than "/shop" for /shop). Bukkit's help returns "/shop"

Thrown exceptions :

http://pastebin.com/W3B08p5h
Thrown when shop is first buit

http://pastebin.com/NDY3bPTC
Thrown when players try to access shop, but end up placing more "hovering" items instead

Running latest posted version of Shop as of 12/2/13

Running :

• CraftBukkit version git-Bukkit-1.6.4-R2.0-12-g378718e-b2932jnks (MC: 1.7.2) (Implementing API version 1.7.2-R0.1-SNAPSHOT)
• CraftBukkit version git-Bukkit-1.6.4-R2.0-b2918jnks (MC: 1.6.4) (Implementing API version 1.6.4-R2.0)

Does not change much. The v1.4 bug fix IS apparent here, though I'm still able to continually add more and different items to the "hover". These item, whether similar to the original or not, combine with the "hovering display" and are lost to the player. Expected but maybe not ideal in the long run.

:)

exception thrown, while creating shop (left-clicking to set item to sell), on recommend CraftBukkit 1.6.4 : http://pastebin.com/59GaknTU

@chrisp6825: Go

Try using the latest file and let me know if this fixes your problem.

Staff edit: snip.