10:11:34 [SEVERE] java.lang.NullPointerException
10:11:34 [SEVERE]       at buildcraft.api.EntityPassiveItem.toEntityItem(EntityPassiveItem.java:91)
10:11:34 [SEVERE]       at buildcraft.transport.PipeTransportItems.moveSolids(PipeTransportItems.java:204)
10:11:34 [SEVERE]       at buildcraft.transport.PipeTransportItems.updateEntity(PipeTransportItems.java:132)
10:11:34 [SEVERE]       at buildcraft.transport.Pipe.updateEntity(Pipe.java:98)
10:11:34 [SEVERE]       at buildcraft.transport.TileGenericPipe.l_(TileGenericPipe.java:99)
10:11:34 [SEVERE]       at net.minecraft.server.World.tickEntities(World.java:1171)
10:11:34 [SEVERE]       at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:524)
10:11:34 [SEVERE]       at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:431)
10:11:34 [SEVERE]       at net.minecraft.server.ThreadServerApplication.run(SourceFile:457)
10:11:34 [SEVERE] Unexpected exception
java.lang.NullPointerException
        at buildcraft.api.EntityPassiveItem.toEntityItem(EntityPassiveItem.java:91)
        at buildcraft.transport.PipeTransportItems.moveSolids(PipeTransportItems.java:204)
        at buildcraft.transport.PipeTransportItems.updateEntity(PipeTransportItems.java:132)
        at buildcraft.transport.Pipe.updateEntity(Pipe.java:98)
        at buildcraft.transport.TileGenericPipe.l_(TileGenericPipe.java:99)
        at net.minecraft.server.World.tickEntities(World.java:1171)
        at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:524)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:431)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:457)