Add this qualifier

src/main/java/appeng/core/sync/AppEngPacket.java

@@ -93,12 +93,13 @@ public abstract class AppEngPacket implements Packet
 
 	PacketCallState caller;
 	
-	public void setCallParam( final PacketCallState call ){caller = call;}
+	public void setCallParam( final PacketCallState call ){
+		this.caller = call;}
 	
 	@Override
 	public void processPacket( final INetHandler handler)
     {
-		caller.call(this);
+		this.caller.call( this );
     }
 
 }

src/main/java/appeng/core/sync/packets/PacketNEIRecipe.java

@@ -218,7 +218,7 @@ public class PacketNEIRecipe extends AppEngPacket
 									// If that doesn't work, grab from the player's inventory
 									if( whichItem == null && playerInventory != null )
 									{
-										whichItem = extractItemFromPlayerInventory( player, realForFake, patternItem );
+										whichItem = this.extractItemFromPlayerInventory( player, realForFake, patternItem );
 									}
 
 									craftMatrix.setInventorySlotContents( x, whichItem );