Issue 108

[12:17:50] [Server thread/INFO] [JustAnotherSpawner/]: Passive Spawning entity MoCreatures.Bird of type OPENSKY at 500, 78, 28 (net.minecraft.world.biome.BiomeGenStoneBeach.Stone Beach)
[12:17:50] [Server thread/ERROR] [JustAnotherSpawner/]: Error processing compiled spawnlistentry postSpawn expression for MoCreatures.Bird
[12:17:50] [Server thread/ERROR] [FML/]: Exception caught during firing event cpw.mods.fml.common.gameevent.TickEvent$ServerTickEvent@32865c6a:
java.lang.ClassCastException: com.google.common.base.Present cannot be cast to org.mvel2.compiler.ExecutableStatement
	at org.mvel2.MVEL.executeExpression(MVEL.java:954) ~[MVEL.class:?]
	at jas.common.helper.MVELHelper.typedExecuteExpression(MVELHelper.java:17) ~[MVELHelper.class:?]
	at jas.common.helper.MVELHelper.executeExpression(MVELHelper.java:11) ~[MVELHelper.class:?]
	at jas.spawner.modern.spawner.creature.handler.LivingHandler.postSpawnEntity(LivingHandler.java:276) ~[LivingHandler.class:?]
	at jas.spawner.modern.spawner.CustomSpawner.spawnCreaturesInChunks(CustomSpawner.java:177) ~[CustomSpawner.class:?]
	at jas.spawner.modern.spawner.SpawnerTicker.performSpawningInWorld(SpawnerTicker.java:77) ~[SpawnerTicker.class:?]
	at jas.spawner.modern.spawner.SpawnerTicker.serverTick(SpawnerTicker.java:46) ~[SpawnerTicker.class:?]
	at cpw.mods.fml.common.eventhandler.ASMEventHandler_101_SpawnerTicker_serverTick_ServerTickEvent.invoke(.dynamic) ~[?:?]
	at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54) ~[ASMEventHandler.class:?]
	at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:138) [EventBus.class:?]
	at cpw.mods.fml.common.FMLCommonHandler.onPreServerTick(FMLCommonHandler.java:260) [FMLCommonHandler.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:536) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [li.class:?]
[12:17:50] [Server thread/ERROR] [FML/]: Index: 6 Listeners:
[12:17:50] [Server thread/ERROR] [FML/]: 0: NORMAL
[12:17:50] [Server thread/ERROR] [FML/]: 1: ASM: INSTANCE tickEnd(Lcpw/mods/fml/common/gameevent/TickEvent$ServerTickEvent;)V
[12:17:50] [Server thread/ERROR] [FML/]: 2: ASM: mcp.mobius.pregen.TickHandler@1c3f35cf foo(Lcpw/mods/fml/common/gameevent/TickEvent$ServerTickEvent;)V
[12:17:50] [Server thread/ERROR] [FML/]: 3: ASM: build.EventHandlerFML@1908d948 tickServer(Lcpw/mods/fml/common/gameevent/TickEvent$ServerTickEvent;)V
[12:17:50] [Server thread/ERROR] [FML/]: 4: ASM: CoroUtil.forge.EventHandlerFML@78cbb36a tickServer(Lcpw/mods/fml/common/gameevent/TickEvent$ServerTickEvent;)V
[12:17:50] [Server thread/ERROR] [FML/]: 5: ASM: ZombieAwareness.ZAEventHandlerFML@57e600b3 tickServer(Lcpw/mods/fml/common/gameevent/TickEvent$ServerTickEvent;)V
[12:17:50] [Server thread/ERROR] [FML/]: 6: ASM: jas.spawner.modern.spawner.SpawnerTicker@4bd66bb5 serverTick(Lcpw/mods/fml/common/gameevent/TickEvent$ServerTickEvent;)V
[12:17:50] [Server thread/DEBUG] [FML/]: Gathering id map for writing to world save world