diff --git a/api/buildcraft/api/blueprints/SchematicTile.java b/api/buildcraft/api/blueprints/SchematicTile.java
index 0902ec86e8..d1b1cd09bc 100755
--- a/api/buildcraft/api/blueprints/SchematicTile.java
+++ b/api/buildcraft/api/blueprints/SchematicTile.java
@@ -49,7 +49,9 @@ public void placeInWorld(IBuilderContext context, BlockPos pos, List<ItemStack>
             tileNBT.setInteger("x", pos.getX());
             tileNBT.setInteger("y", pos.getY());
             tileNBT.setInteger("z", pos.getZ());
-            context.world().setTileEntity(pos, TileEntity.createAndLoadEntity(tileNBT));
+            TileEntity tile = TileEntity.createAndLoadEntity(tileNBT);
+            tile.setWorldObj(context.world());
+            context.world().setTileEntity(pos, tile);
         }
     }
 
diff --git a/common/buildcraft/core/builders/BuildingSlotBlock.java b/common/buildcraft/core/builders/BuildingSlotBlock.java
index 294ca24d60..94290abb92 100755
--- a/common/buildcraft/core/builders/BuildingSlotBlock.java
+++ b/common/buildcraft/core/builders/BuildingSlotBlock.java
@@ -108,10 +108,14 @@ && getSchematic() instanceof SchematicBlock) {
                         boolean contains = false;
                         for (ItemStack ss : oldRequirements) {
                             if (getSchematic().isItemMatchingRequirement(s, ss)) {
+                                BCLog.logger.info(" The item stack " + ss + " matched the stored requirement " + s);
                                 contains = true;
                                 break;
+                            } else {
+                                BCLog.logger.info(" The item stack " + ss + " DI NOT match the stored requirement " + s);
                             }
                         }
+                        BCLog.logger.info("Old requriements size = " + oldRequirements.size());
                         if (!contains) {
                             BCLog.logger.warn(
                                     "Blueprint has MISMATCHING REQUIREMENTS! Potential corrupted/hacked blueprint! Removed mismatched block.");
@@ -133,7 +137,6 @@ && getSchematic() instanceof SchematicBlock) {
                 // air.
 
                 TileEntity e = context.world().getTileEntity(pos);
-
                 if (e != null && e instanceof ITickable) {
                     ((ITickable) e).update();
                 }
diff --git a/common/buildcraft/transport/schematics/SchematicPipe.java b/common/buildcraft/transport/schematics/SchematicPipe.java
index 94ae7ac532..73322128f7 100644
--- a/common/buildcraft/transport/schematics/SchematicPipe.java
+++ b/common/buildcraft/transport/schematics/SchematicPipe.java
@@ -15,6 +15,8 @@
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.EnumFacing.Axis;
 
+import net.minecraftforge.common.util.Constants;
+
 import buildcraft.api.blueprints.*;
 import buildcraft.api.statements.IStatement;
 import buildcraft.api.statements.IStatementParameter;
@@ -33,7 +35,11 @@ public boolean isAlreadyBuilt(IBuilderContext context, BlockPos pos) {
         Pipe<?> pipe = BlockGenericPipe.getPipe(context.world(), pos);
 
         if (BlockGenericPipe.isValid(pipe)) {
-            return pipe.item == Item.getItemById(tileNBT.getInteger("pipeId"));
+            if (tileNBT.hasKey("pipeId", Constants.NBT.TAG_INT)) {
+                return pipe.item == Item.getItemById(tileNBT.getInteger("pipeId"));
+            } else {
+                return pipe.item == Item.getByNameOrId(tileNBT.getString("pipeId"));
+            }
         } else {
             return false;
         }
@@ -47,7 +53,12 @@ public void rotateLeft(IBuilderContext context) {
         props.rotateLeft();
         props.writeToNBT(tileNBT);
 
-        Item pipeItem = Item.getItemById(tileNBT.getInteger("pipeId"));
+        Item pipeItem;
+        if (tileNBT.hasKey("pipeId", Constants.NBT.TAG_INT)) {
+            pipeItem = Item.getItemById(tileNBT.getInteger("pipeId"));
+        } else {
+            pipeItem = Item.getByNameOrId(tileNBT.getString("pipeId"));
+        }
 
         if (BptPipeExtension.contains(pipeItem)) {
             BptPipeExtension.get(pipeItem).rotateLeft(this, context);
@@ -146,6 +157,7 @@ public void placeInWorld(IBuilderContext context, BlockPos pos, List<ItemStack>
         context.world().setBlockState(pos, state, 3);
 
         TileEntity tile = context.world().getTileEntity(pos);
+        tile.setWorldObj(context.world());
         tile.readFromNBT(tileNBT);
     }
 
@@ -186,6 +198,11 @@ public void storeRequirements(IBuilderContext context, BlockPos pos) {
             storedRequirements[storedRequirements.length - 1] = new ItemStack(pipe.item, 1, pipe.container.getItemMetadata());
         }
     }
+    
+    @Override
+    public void getRequirementsForPlacement(IBuilderContext context, List<ItemStack> requirements) {
+
+    }
 
     @Override
     public void postProcessing(IBuilderContext context, BlockPos pos) {
@@ -205,9 +222,13 @@ public BuildingStage getBuildStage() {
     public void idsToBlueprint(MappingRegistry registry) {
         super.idsToBlueprint(registry);
 
-        if (tileNBT.hasKey("pipeId")) {
+        if (tileNBT.hasKey("pipeId", Constants.NBT.TAG_INT)) {
             Item item = Item.getItemById(tileNBT.getInteger("pipeId"));
 
+            tileNBT.setInteger("pipeId", registry.getIdForItem(item));
+        } else if (tileNBT.hasKey("pipeId")) {
+            Item item = Item.getByNameOrId(tileNBT.getString("pipeId"));
+
             tileNBT.setInteger("pipeId", registry.getIdForItem(item));
         }
     }
@@ -220,7 +241,7 @@ public void idsToWorld(MappingRegistry registry) {
             try {
                 Item item = registry.getItemForId(tileNBT.getInteger("pipeId"));
 
-                tileNBT.setInteger("pipeId", Item.getIdFromItem(item));
+                tileNBT.setString("pipeId", Item.itemRegistry.getNameForObject(item).toString());
             } catch (MappingNotFoundException e) {
                 tileNBT.removeTag("pipeId");
             }