Synthesizer not accept items from pipe unless same kind item in internal strage.

[esetomo]

It seems that intarnal strage acts as real crafting slots.

[Rushmead]

Internal Storage?

[esetomo]

Yes.

TileEntitySynthesis.java:

public int addItem(ItemStack stack, boolean doAdd, ForgeDirection direction) { // add items in round robin fashion to input slots (as the autobench does) return new TransactorSimple(storageInventory).add(stack, direction, doAdd).stackSize; }

Synthesizer add item to Internal Storage as the autobench does. If Internal Storage is empty, Synthesizer doesn't accept any item.

[perky]

This has already been fixed.