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Issue description:

People are reporting a crash that occurs regularly for them but not at all for other players. I myself experienced this connecting to a server but it eventually went away. This is getting enough attention and causing enough people frustration I wanted to get some reports out to both mod devs that the stacktrace shows in hopes of a fix from either dev. The stacktrace seems to involve both mek and little tiles but im not sure which mod is best suited to the fix so I'm posting to both trackers.

Steps to reproduce:

1. Join a server or switch to LAN game
2. change world
3. error sometimes happens for some people but rarely and hard to reproduce

Version (make sure you are on the latest version before reporting):

Forge: 2795
Mekanism: Mekanism-1.12.2-9.6.7.360.jar
Other relevant version: LT: LittleTiles_v1.5.0-pre130_mc1.12.2.jar

If a (crash)log is relevant for this issue, link it here: (It's almost always relevant)

Logifle:
https://cdn.discordapp.com/attachments/563344094043045903/563344186913325094/2019-04-04-6.log

relevant part where the disconnect happens:
[23:46:24] [Netty Local Client IO #0/ERROR]: Something went wrong java.lang.NullPointerException: null at mekanism.common.block.BlockBounding.getMainBlockPos(BlockBounding.java:31) ~[BlockBounding.class:?] at mekanism.common.block.BlockBounding.getPickBlock(BlockBounding.java:94) [BlockBounding.class:?] at li.cil.scannable.util.BlockUtils.getItemStackFromState(BlockUtils.java:23) [BlockUtils.class:?] at li.cil.scannable.client.scanning.ScanResultProviderBlock.buildOreCache(ScanResultProviderBlock.java:424) [ScanResultProviderBlock.class:?] at li.cil.scannable.client.scanning.ScanResultProviderBlock.rebuildOreCache(ScanResultProviderBlock.java:91) [ScanResultProviderBlock.class:?] at li.cil.scannable.common.config.Settings.setServerSettings(Settings.java:272) [Settings.class:?] at li.cil.scannable.common.network.Network.onClientDisconnectionFromServer(Network.java:58) [Network.class:?] at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_3086_Network_onClientDisconnectionFromServer_ClientDisconnectionFromServerEvent.invoke(.dynamic) [?:?] at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90) [ASMEventHandler.class:?] at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:182) [EventBus.class:?] at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.close(NetworkDispatcher.java:502) [NetworkDispatcher.class:?] at io.netty.channel.AbstractChannelHandlerContext.invokeClose(AbstractChannelHandlerContext.java:624) [netty-all-4.1.9.Final.jar:4.1.9.Final] at io.netty.channel.AbstractChannelHandlerContext.access$1100(AbstractChannelHandlerContext.java:38) [netty-all-4.1.9.Final.jar:4.1.9.Final] at io.netty.channel.AbstractChannelHandlerContext$13.run(AbstractChannelHandlerContext.java:613) [netty-all-4.1.9.Final.jar:4.1.9.Final] at io.netty.channel.DefaultEventLoop.run(DefaultEventLoop.java:54) [netty-all-4.1.9.Final.jar:4.1.9.Final] at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) [netty-all-4.1.9.Final.jar:4.1.9.Final] at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]

cross posted to little tiles tracker:
CreativeMD/LittleTiles#152

duplicate of #5319