diff --git a/gradle.properties b/gradle.properties
index 11b6f5742..94bc550f3 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -4,7 +4,7 @@ aebuild=7
 aegroup=appeng
 aebasename=appliedenergistics2
 extended=extended_life
-extendedversion=v49ac
+extendedversion=v50
 #########################################################
 # Versions                                              #
 #########################################################
diff --git a/src/main/java/appeng/core/AEConfig.java b/src/main/java/appeng/core/AEConfig.java
index f6a3a5be8..f7b3e5b63 100644
--- a/src/main/java/appeng/core/AEConfig.java
+++ b/src/main/java/appeng/core/AEConfig.java
@@ -97,6 +97,14 @@ public final class AEConfig extends Configuration implements IConfigurableObject
 			"gregtech:shape.extruder.bottle", "gregtech:shape.extruder.foil",
 			"gregtech:shape.extruder.gear_small",
 			"gregtech:shape.extruder.rod_long", "gregtech:shape.extruder.rotor",
+			"gregtech:glass_lens.white", "gregtech:glass_lens.orange",
+			"gregtech:glass_lens.magenta", "gregtech:glass_lens.light_blue",
+			"gregtech:glass_lens.yellow", "gregtech:glass_lens.lime",
+			"gregtech:glass_lens.pink", "gregtech:glass_lens.gray",
+			"gregtech:glass_lens.light_gray", "gregtech:glass_lens.cyan",
+			"gregtech:glass_lens.purple", "gregtech:glass_lens.blue",
+			"gregtech:glass_lens.brown", "gregtech:glass_lens.green",
+			"gregtech:glass_lens.red", "gregtech:glass_lens.black",
 			"contenttweaker:smallgearextrudershape",
 			"contenttweaker:creativeportabletankmold"
 	};
diff --git a/src/main/java/appeng/helpers/DualityInterface.java b/src/main/java/appeng/helpers/DualityInterface.java
index 42d877890..e499201c3 100644
--- a/src/main/java/appeng/helpers/DualityInterface.java
+++ b/src/main/java/appeng/helpers/DualityInterface.java
@@ -108,7 +108,7 @@ import static gregtech.api.block.machines.BlockMachine.getMetaTileEntity;
 
 public class DualityInterface implements IGridTickable, IStorageMonitorable, IInventoryDestination, IAEAppEngInventory, IConfigManagerHost, ICraftingProvider, IUpgradeableHost
 {
-	private int[] failedCraftTriesSlot = {0, 0, 0, 0, 0, 0, 0, 0, 0};
+	private final int[] failedCraftTriesSlot = {0, 0, 0, 0, 0, 0, 0, 0, 0};
 
 	public static final int NUMBER_OF_STORAGE_SLOTS = 9;
 	public static final int NUMBER_OF_CONFIG_SLOTS = 9;
@@ -139,7 +139,6 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 	private final Accessor accessor = new Accessor();
 	private EnumSet<EnumFacing> visitedFaces = EnumSet.noneOf( EnumFacing.class );
 	private EnumMap<EnumFacing, List<ItemStack>> waitingToSendFacing = new EnumMap<>( EnumFacing.class );
-	private BlockingInventoryAdaptor blockingInventoryAdaptor;
 	private boolean resetConfigCache = true;
 	private IMEMonitor<IAEItemStack> configCachedHandler;
 
@@ -1285,7 +1284,7 @@ public class DualityInterface implements IGridTickable, IStorageMonitorable, IIn
 
 	boolean isCustomInvBlocking( TileEntity te, EnumFacing s )
 	{
-		blockingInventoryAdaptor = BlockingInventoryAdaptor.getAdaptor( te, s.getOpposite() );
+		BlockingInventoryAdaptor blockingInventoryAdaptor = BlockingInventoryAdaptor.getAdaptor( te, s.getOpposite() );
 		return invIsCustomBlocking( blockingInventoryAdaptor );
 	}
 
diff --git a/src/main/java/appeng/helpers/NonBlockingItems.java b/src/main/java/appeng/helpers/NonBlockingItems.java
index d7ab5a4a4..62478700e 100644
--- a/src/main/java/appeng/helpers/NonBlockingItems.java
+++ b/src/main/java/appeng/helpers/NonBlockingItems.java
@@ -57,6 +57,18 @@ public class NonBlockingItems
 								NON_BLOCKING_MAP.get( modid ).add( AEItemStack.fromItemStack( metaItem2.getStackForm() ) );
 								break;
 							}
+							else
+							{
+								ItemStack itemStack = GameRegistry.makeItemStack( ModItemMeta[0] + ":" + ModItemMeta[1], ModItemMeta.length == 3 ? Integer.parseInt( ModItemMeta[2] ) : 0, 1, null );
+								if( !itemStack.isEmpty() )
+								{
+									NON_BLOCKING_MAP.get( modid ).add( AEItemStack.fromItemStack( itemStack ) );
+								}
+								else
+								{
+									AELog.error( "Item not found on nonBlocking config: " + s );
+								}
+							}
 						}
 					}
 					else
diff --git a/src/main/java/appeng/util/inv/BlockingItemHandler.java b/src/main/java/appeng/util/inv/BlockingItemHandler.java
index e65371dce..60958e3bd 100644
--- a/src/main/java/appeng/util/inv/BlockingItemHandler.java
+++ b/src/main/java/appeng/util/inv/BlockingItemHandler.java
@@ -5,13 +5,9 @@ import appeng.api.storage.data.IAEItemStack;
 import appeng.api.storage.data.IItemList;
 import appeng.helpers.NonBlockingItems;
 import appeng.util.item.AEItemStack;
-import appeng.util.item.ItemList;
-import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
 import net.minecraftforge.items.IItemHandler;
 
-import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.Collection;
 import java.util.Iterator;