When I trying request auto-crafting cables from Refined Storage mod it's nothing happend and crafting monitor was empty. I have all items needed to craft this. When I was looking into server log then I saw this:

[Server thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_121]
at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_121]
at net.minecraft.util.Util.func_181617_a(SourceFile:47) [h.class:?]
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:721) [MinecraftServer.class:?]
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:396) [nz.class:?]
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:666) [MinecraftServer.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:524) [MinecraftServer.class:?]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_121]
Caused by: java.lang.NullPointerException
at com.raoulvdberge.refinedstorage.apiimpl.autocrafting.task.CraftingTask.(CraftingTask.java:70) ~[CraftingTask.class:?]
at com.raoulvdberge.refinedstorage.apiimpl.network.grid.handler.ItemGridHandler.onCraftingRequested(ItemGridHandler.java:200) ~[ItemGridHandler.class:?]
at com.raoulvdberge.refinedstorage.network.MessageGridCraftingStart.handle(MessageGridCraftingStart.java:44) ~[MessageGridCraftingStart.class:?]
at com.raoulvdberge.refinedstorage.network.MessageGridCraftingStart.handle(MessageGridCraftingStart.java:12) ~[MessageGridCraftingStart.class:?]
at com.raoulvdberge.refinedstorage.network.MessageHandlerPlayerToServer.lambda$onMessage$0(MessageHandlerPlayerToServer.java:13) ~[MessageHandlerPlayerToServer.class:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_121]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_121]
at net.minecraft.util.Util.func_181617_a(SourceFile:46) ~[h.class:?]
... 5 more

I am experiencing this issue as well so far i have had issues with Mekanism pipes of any kind and refined storage cables not crafting and throwing this console error.

Same here! System stop processing Refined Storage cables as before.

This seems to affect items from several mods, the patterns work in a regular crafter but fail as above in the multi block crafter.

Doesn’t just affect items from mods, my multiblock crafter won’t make sticks from planks...