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java.lang.NullPointerException: Ticking block entity	at li.cil.oc.common.tileentity.traits.Environment$class.isConnected(Environment.scala:30)	at li.cil.oc.common.tileentity.Robot.isConnected(Robot.scala:51)	at li.cil.oc.common.tileentity.traits.Computer$class.updateEntity(Computer.scala:111)	at li.cil.oc.common.tileentity.Robot.func_145845_h(Robot.scala:326)	at li.cil.oc.common.tileentity.RobotProxy.func_145845_h(RobotProxy.scala:106)	at net.minecraft.world.World.func_72939_s(World.java:2529)	at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:633)	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:954)	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:431)	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:809)	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:669)	at java.lang.Thread.run(Thread.java:745)