MythicMobs

[15:41:07] [Server thread/WARN]: [MythicMobs] Task #34 for MythicMobs v1.0.0 generated an exception
java.lang.IllegalArgumentException: n must be positive
	at java.util.Random.nextInt(Unknown Source) ~[?:1.7.0_51]
	at net.elseland.xikage.MythicMobs.Spawners.MythicSpawner.Spawn(MythicSpawner.java:268) ~[?:?]
	at net.elseland.xikage.MythicMobs.Spawners.MythicSpawner.SpawnerClock(MythicSpawner.java:191) ~[?:?]
	at net.elseland.xikage.MythicMobs.Spawners.SpawnerHandler.tickSpawnerClocks(SpawnerHandler.java:22) ~[?:?]
	at net.elseland.xikage.MythicMobs.Clock.MythicMobsClock.run(MythicMobsClock.java:42) ~[?:?]
	at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftTask.run(CraftTask.java:53) ~[craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
	at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:345) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
	at net.minecraft.server.v1_7_R3.MinecraftServer.v(MinecraftServer.java:600) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
	at net.minecraft.server.v1_7_R3.DedicatedServer.v(DedicatedServer.java:260) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
	at net.minecraft.server.v1_7_R3.MinecraftServer.u(MinecraftServer.java:558) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
	at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:469) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
	at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]