CRAFTBOOK-3006 - Reported by Zeluboba

00:14:26 [WARNING] Wrong location for EntityArrow['arrow'/547098, l='world', x=NaN, y=63,00, z=NaN] in world 'world'!
00:14:26 [WARNING] Entity is at NaN,NaN (chunk 0,0) but was stored in chunk 24,-97
Seems like that arrow was arrow in chair added by CraftBook. I have no idea what's happened and how to remove it.

Comment by me4502

Try updating bukkit to the latest, nothing should be passing NaN as the location.