Update: After some troubleshooting and testing I can confirm with 99% certainty that the crash comes from the Courier being told to deposit items into a Warehouse interface that isn't in the location listed on the route order I am not sure if this issue can be caused by other storage blocks.

I play on a server with a few buds and we encountered a crash that I can only deduce from this output is related to a Courier. We were trying to figure out how to get the courier to dump items into the warehouse interface using a routing order. I am pretty sure I moved the warehouse interface block without modifying the routing order and the server crashed when the courier returned to dump items.

Below is the crash report of the event:

at net.shadowmage.ancientwarfare.npc.ai.owned.NpcAIPlayerOwnedCourier.getTargetHandler(NpcAIPlayerOwnedCourier.java:121)
at net.shadowmage.ancientwarfare.npc.ai.owned.NpcAIPlayerOwnedCourier.startWork(NpcAIPlayerOwnedCourier.java:101)
at net.shadowmage.ancientwarfare.npc.ai.owned.NpcAIPlayerOwnedCourier.workAtSite(NpcAIPlayerOwnedCourier.java:88)
at net.shadowmage.ancientwarfare.npc.ai.owned.NpcAIPlayerOwnedCourier.func_75246_d(NpcAIPlayerOwnedCourier.java:73)
at net.minecraft.entity.ai.EntityAITasks.func_75774_a(SourceFile:129)
at net.minecraft.entity.EntityLiving.func_70626_be(EntityLiving.java:763)
at net.minecraft.entity.EntityLivingBase.func_70636_d(EntityLivingBase.java:2347)
at net.minecraft.entity.EntityLiving.func_70636_d(EntityLiving.java:577)
at net.shadowmage.ancientwarfare.npc.entity.NpcPlayerOwned.func_70636_d(NpcPlayerOwned.java:314)
at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:2167)
at net.minecraft.entity.EntityLiving.func_70071_h_(EntityLiving.java:295)
at net.shadowmage.ancientwarfare.npc.entity.NpcBase.func_70071_h_(NpcBase.java:803)
at net.minecraft.world.World.func_72866_a(World.java:1986)
at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:831)
at net.minecraft.world.World.func_72870_g(World.java:1948)
at net.minecraft.world.World.func_72939_s(World.java:1755)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:612)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:765)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:396)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:666)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:524)
at java.lang.Thread.run(Unknown Source)