Fix facade recipes. Hopefully the last null check fix.

src/main/java/appeng/parts/AEBasePart.java

@@ -426,7 +426,7 @@ public abstract class AEBasePart implements IPart, IGridProxyable, IActionHost,
 	{
 		final ItemStack memCardIS = player.inventory.getCurrentItem();
 
-		if( memCardIS != null && this.useStandardMemoryCard() && memCardIS.getItem() instanceof IMemoryCard )
+		if( !memCardIS.isEmpty() && this.useStandardMemoryCard() && memCardIS.getItem() instanceof IMemoryCard )
 		{
 			final IMemoryCard memoryCard = (IMemoryCard) memCardIS.getItem();
 

src/main/java/appeng/parts/PartPlacement.java

@@ -436,7 +436,7 @@ public class PartPlacement
 				boolean supportedItem = items.memoryCard().isSameAs( held );
 				supportedItem |= items.colorApplicator().isSameAs( held );
 
-				if( event.getEntityPlayer().isSneaking() && held != null && supportedItem )
+				if( event.getEntityPlayer().isSneaking() && !held.isEmpty() && supportedItem )
 				{
 					NetworkHandler.instance().sendToServer( new PacketClick( event.getPos(), event.getFace(), 0, 0, 0, event.getHand() ) );
 				}

src/main/java/appeng/parts/automation/PartIdentityAnnihilationPlane.java

@@ -23,6 +23,7 @@ import java.util.ArrayList;
 import java.util.List;
 
 import net.minecraft.block.state.IBlockState;
+import net.minecraft.init.Items;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
 import net.minecraft.tileentity.TileEntity;
@@ -86,7 +87,7 @@ public class PartIdentityAnnihilationPlane extends PartAnnihilationPlane
 			final List<ItemStack> out = new ArrayList<ItemStack>( 1 );
 			final Item item = Item.getItemFromBlock( state.getBlock() );
 
-			if( item != null )
+			if( item != Items.AIR )
 			{
 				int meta = 0;
 				if( item.getHasSubtypes() )

src/main/java/appeng/parts/automation/PartImportBus.java

@@ -20,6 +20,7 @@ package appeng.parts.automation;
 
 
 import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.init.Items;
 import net.minecraft.item.ItemStack;
 import net.minecraft.util.EnumHand;
 import net.minecraft.util.ResourceLocation;
@@ -88,7 +89,7 @@ public class PartImportBus extends PartSharedItemBus implements IInventoryDestin
 	@Override
 	public boolean canInsert( final ItemStack stack )
 	{
-		if( stack.isEmpty() || stack.getItem() == null )
+		if( stack.isEmpty() || stack.getItem() == Items.AIR )
 		{
 			return false;
 		}

src/main/java/appeng/parts/automation/UpgradeInventory.java

@@ -19,6 +19,7 @@
 package appeng.parts.automation;
 
 
+import net.minecraft.init.Items;
 import net.minecraft.inventory.IInventory;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
@@ -117,7 +118,7 @@ public abstract class UpgradeInventory extends AppEngInternalInventory implement
 
 		for( final ItemStack is : this )
 		{
-			if( is == null || is.getItem() == null || !( is.getItem() instanceof IUpgradeModule ) )
+			if( is == null || is.getItem() == Items.AIR || !( is.getItem() instanceof IUpgradeModule ) )
 			{
 				continue;
 			}

src/main/java/appeng/parts/reporting/PartConversionMonitor.java

@@ -91,13 +91,13 @@ public class PartConversionMonitor extends AbstractPartMonitor
 		boolean ModeB = false;
 
 		ItemStack item = player.getHeldItem( hand );
-		if( item == null && this.getDisplayed() != null )
+		if( item.isEmpty() && this.getDisplayed() != null )
 		{
 			ModeB = true;
 			item = ( (IAEItemStack) this.getDisplayed() ).getItemStack();
 		}
 
-		if( item != null )
+		if( !item.isEmpty() )
 		{
 			try
 			{