oderror

02:13:40 [WARNING] Unexpected exception while parsing console command "odr"
org.bukkit.command.CommandException: Unhandled exception executing command 'odr' in plugin OtherDrops v2.8-beta4
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46)
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:186)
        at org.bukkit.craftbukkit.v1_4_R1.CraftServer.dispatchCommand(CraftServer.java:514)
        at org.bukkit.craftbukkit.v1_4_R1.CraftServer.dispatchServerCommand(CraftServer.java:506)
        at net.minecraft.server.v1_4_R1.DedicatedServer.al(DedicatedServer.java:260)
        at net.minecraft.server.v1_4_R1.DedicatedServer.r(DedicatedServer.java:225)
        at net.minecraft.server.v1_4_R1.MinecraftServer.q(MinecraftServer.java:494)
        at net.minecraft.server.v1_4_R1.MinecraftServer.run(MinecraftServer.java:427)
        at net.minecraft.server.v1_4_R1.ThreadServerApplication.run(SourceFile:849)
Caused by: java.lang.NullPointerException
        at com.gmail.zariust.otherdrops.data.entities.SkeletonData.toString(SkeletonData.java:146)
        at com.gmail.zariust.otherdrops.data.entities.SkeletonData.get(SkeletonData.java:153)
        at com.gmail.zariust.otherdrops.drop.CreatureDrop.parse(CreatureDrop.java:133)
        at com.gmail.zariust.otherdrops.drop.DropType.parse(DropType.java:263)
        at com.gmail.zariust.otherdrops.drop.DropType.parseFrom(DropType.java:201)
        at com.gmail.zariust.otherdrops.OtherDropsConfig.loadSimpleDrop(OtherDropsConfig.java:605)
        at com.gmail.zariust.otherdrops.OtherDropsConfig.loadDrop(OtherDropsConfig.java:511)
        at com.gmail.zariust.otherdrops.OtherDropsConfig.loadBlockDrops(OtherDropsConfig.java:495)
        at com.gmail.zariust.otherdrops.OtherDropsConfig.loadDropsFile(OtherDropsConfig.java:414)
        at com.gmail.zariust.otherdrops.OtherDropsConfig.loadDropsFile(OtherDropsConfig.java:433)
        at com.gmail.zariust.otherdrops.OtherDropsConfig.loadConfig(OtherDropsConfig.java:297)
        at com.gmail.zariust.otherdrops.OtherDropsConfig.load(OtherDropsConfig.java:191)
        at com.gmail.zariust.otherdrops.OtherDropsCommand.onCommand(OtherDropsCommand.java:114)
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
        ... 8 more