We are currently dealing with reality. If you have a problem, please give us logs, versions, and a plugin list, and we will attempt to fix it by next Milestone. DestroyEvent also doesn't work, we know, see below. We're trying to find a workaround.
Built against CB 1.2.5-R1.2; if you're getting errors you may want to try the CB dev builds
DestroyEvent doesn't work due to BUKKIT-1528
Main World Quests may temporarily destroy threads because of premature construction.