zombies 1.5

25.07 17:42:47 [Server] INFO Enabling Zombies v1.5.0
25.07 17:42:47 [Server] INFO Succesfully loaded explosives.yml
25.07 17:42:47 [Server] INFO Succesfully loaded guns.yml
25.07 17:42:47 [Server] INFO Succesfully loaded knives.yml
25.07 17:42:47 [Server] INFO Loading in games and arenas...
25.07 17:42:47 [Server] INFO Adding arena night to game 1
25.07 17:42:47 [Server] INFO - Adding section Main
25.07 17:42:47 [Server] INFO - 2 item chests added
25.07 17:42:47 [Server] INFO - 5 monster spawns added
25.07 17:42:47 [Server] INFO - Adding section 1
25.07 17:42:47 [Server] INFO - 1 doors added
25.07 17:42:47 [Server] INFO - 3 monster spawns added
25.07 17:42:47 [Server] INFO - 1 mystery box added
25.07 17:42:47 [Server] INFO - 1 power switch added
25.07 17:42:47 [Server] INFO - Adding section Power
25.07 17:42:47 [Server] INFO - Adding section 2
25.07 17:42:47 [Server] INFO - 1 doors added
25.07 17:42:47 [Server] INFO - 2 item chests added
25.07 17:42:47 [Server] INFO - 3 monster spawns added
25.07 17:42:47 [Server] INFO - 1 perk machines added
25.07 17:42:47 [Server] INFO - Adding section 3
25.07 17:42:47 [Server] INFO - 2 doors added
25.07 17:42:47 [Server] INFO - 2 item chests added
25.07 17:42:47 [Server] INFO - 1 monster spawns added
25.07 17:42:47 [Server] INFO - 3 perk machines added
25.07 17:42:47 [Server] INFO Succesfully added arena night to game 1
25.07 17:42:47 [Server] INFO Loaded 1 game(s) from the cache
25.07 17:42:47 [Server] ERROR Error occurred while enabling Zombies v1.5.0 (Is it up to date?)
25.07 17:42:47 [Server] INFO java.lang.NullPointerException