Crash when removing machine with upgrades

[estranged42]

I removed a crafting table from the Upgrades tab and received the following crash report.

  java.lang.NullPointerException: Ticking block entity
    at vswe.production.tileentity.TileEntityTable.transfer(TileEntityTable.java:351)
    at vswe.production.tileentity.TileEntityTable.func_145845_h(TileEntityTable.java:328)
    at net.minecraft.world.World.func_72939_s(World.java:1888)
    at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:489)
    at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:636)
    at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547)
    at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:111)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)
    at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)

  A detailed walkthrough of the error, its code path and all known details is as follows:
  ---------------------------------------------------------------------------------------

  -- Head --
  Stacktrace:
    at vswe.production.tileentity.TileEntityTable.transfer(TileEntityTable.java:351)
    at vswe.production.tileentity.TileEntityTable.func_145845_h(TileEntityTable.java:328)

  -- Block entity being ticked --
  Details:
    Name: production_table // vswe.production.tileentity.TileEntityTable
    Block type: ID #796 (tile.null // vswe.production.block.BlockTable)
    Block data value: 1 / 0x1 / 0b0001
    Block location: World: (-2,78,51), Chunk: (at 14,4,3 in -1,3; contains blocks -16,0,48 to -1,255,63), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
    Actual block type: ID #796 (tile.null // vswe.production.block.BlockTable)
    Actual block data value: 1 / 0x1 / 0b0001
  Stacktrace:
    at net.minecraft.world.World.func_72939_s(World.java:1888)
    at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:489)

[estranged42]

Steps to reproduce:

• Place new production table
• Add crafting table in Upgrades tab
• Add auto-crafting upgrade to crafting table
• Add storage upgrade to crafting table
• Add auto-transfer upgrade
• Configure crafting table to auto-output to a chest (I did the left side, my right when facing table)
• Set up a crafting recipe in the crafting table
• Add enough materials to the crafting table storage to produce several items
• Go to Upgrades tab and remove the crafting table
• Crash

This seems to make the world un-loadable also, as it immediately crashes when trying to re-enter the world.

[Vswe]

I've found the issue, it still thinks it can auto transfer but once it tries to do so it can't find the target slots since the machine was removed. It was an easy fix and it will be released in a bit.