Migrated from: https://dev.bukkit.org/projects/shopkeepers/issues/123

Originally posted by Jnk1296 (Apr 14, 2013):

Stack Trace can be seen here: http://pastebin.com/WwLv4Rdm
What steps will reproduce the problem?

1. Upgrade ShopKeepers to 1.1.3

2. Upgrade Bukkit to latest Beta Build of 1.5.1

3. Exceptions begin appearing after a few minutes.
   We only begin receiving these errors after updating the server. List of plugins is as follows:

LetItRain, WorldEdit, Elevators, JukeboxControl, OpVerify, Vault, PlotMe, PermissionsEx, Multiverse Core(+Inventories, NetherPortals, Portals,), LogBlock, WorldGuard, RangeBans, AutoMessage, PerformanceMonitor, IP-Check, DisguiseCraft, DeepVanish, OWHPoweredNetherrack, ColorMe, Modifyworld, Votifier, VoteLinks, MemoryOverload, AsknElevators, Lift, Essentials (+XMPP, Protect, Spawn, Chat, and AntiBuild), MVote, xAuth, Towny, and TownyChat.
Plugins we updated when directly before the errors began occurring: Multiverse Inventores, Multiverse Portals, WorldEdit, DisguiseCraft, RangeBans.

Originally closed by nisovin (Jul 5, 2013)

Originally commented by nisovin (Apr 15, 2013):

Isn't there any more to the exception? The most important part seems to be missing.