A bunch of entity types needed the new keyword on their static TypeId properties.

SubstrateCS/Source/Entities/EntityBlaze.cs

@@ -13,7 +13,7 @@ namespace Substrate.Entities
             new SchemaNodeString("id", TypeId),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "Blaze"; }
         }

SubstrateCS/Source/Entities/EntityCaveSpider.cs

@@ -13,7 +13,7 @@ namespace Substrate.Entities
             new SchemaNodeString("id", TypeId),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "CaveSpider"; }
         }

SubstrateCS/Source/Entities/EntityChicken.cs

@@ -13,7 +13,7 @@ namespace Substrate.Entities
             new SchemaNodeString("id", TypeId),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "Chicken"; }
         }

SubstrateCS/Source/Entities/EntityCow.cs

@@ -13,7 +13,7 @@ namespace Substrate.Entities
             new SchemaNodeString("id", TypeId),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "Cow"; }
         }

SubstrateCS/Source/Entities/EntityCreeper.cs

@@ -14,7 +14,7 @@ namespace Substrate.Entities
             new SchemaNodeScaler("powered", TagType.TAG_BYTE, SchemaOptions.OPTIONAL),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "Creeper"; }
         }

SubstrateCS/Source/Entities/EntityEnderDragon.cs

@@ -13,7 +13,7 @@ namespace Substrate.Entities
             new SchemaNodeString("id", TypeId),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "EnderDragon"; }
         }

SubstrateCS/Source/Entities/EntityEnderman.cs

@@ -19,7 +19,7 @@ namespace Substrate.Entities
             new SchemaNodeScaler("carriedData", TagType.TAG_SHORT, SchemaOptions.CREATE_ON_MISSING),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "Enderman"; }
         }

SubstrateCS/Source/Entities/EntityGhast.cs

@@ -13,7 +13,7 @@ namespace Substrate.Entities
             new SchemaNodeString("id", TypeId),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "Ghast"; }
         }

SubstrateCS/Source/Entities/EntityGiant.cs

@@ -13,7 +13,7 @@ namespace Substrate.Entities
             new SchemaNodeString("id", TypeId),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "Giant"; }
         }

SubstrateCS/Source/Entities/EntityMagmaCube.cs

@@ -13,7 +13,7 @@ namespace Substrate.Entities
             new SchemaNodeString("id", TypeId),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "LavaSlime"; }
         }

SubstrateCS/Source/Entities/EntityMinecartChest.cs

@@ -12,7 +12,7 @@ namespace Substrate.Entities
             new SchemaNodeList("Items", TagType.TAG_COMPOUND, ItemCollection.Schema),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return EntityMinecart.TypeId; }
         }

SubstrateCS/Source/Entities/EntityMinecartFurnace.cs

@@ -15,7 +15,7 @@ namespace Substrate.Entities
             new SchemaNodeScaler("Fuel", TagType.TAG_SHORT),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return EntityMinecart.TypeId; }
         }

SubstrateCS/Source/Entities/EntityMonster.cs

@@ -13,7 +13,7 @@ namespace Substrate.Entities
             new SchemaNodeString("id", TypeId),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "Monster"; }
         }

SubstrateCS/Source/Entities/EntityMooshroom.cs

@@ -13,7 +13,7 @@ namespace Substrate.Entities
             new SchemaNodeString("id", TypeId),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "MushroomCow"; }
         }

SubstrateCS/Source/Entities/EntityPig.cs

@@ -14,7 +14,7 @@ namespace Substrate.Entities
             new SchemaNodeScaler("Saddle", TagType.TAG_BYTE),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "Pig"; }
         }

SubstrateCS/Source/Entities/EntityPigZombie.cs

@@ -14,7 +14,7 @@ namespace Substrate.Entities
             new SchemaNodeScaler("Anger", TagType.TAG_SHORT),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "PigZombie"; }
         }

SubstrateCS/Source/Entities/EntitySheep.cs

@@ -15,7 +15,7 @@ namespace Substrate.Entities
             new SchemaNodeScaler("Color", TagType.TAG_BYTE, SchemaOptions.CREATE_ON_MISSING),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "Sheep"; }
         }

SubstrateCS/Source/Entities/EntitySilverfish.cs

@@ -13,7 +13,7 @@ namespace Substrate.Entities
             new SchemaNodeString("id", TypeId),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "Silverfish"; }
         }

SubstrateCS/Source/Entities/EntitySkeleton.cs

@@ -13,7 +13,7 @@ namespace Substrate.Entities
             new SchemaNodeString("id", TypeId),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "Skeleton"; }
         }

SubstrateCS/Source/Entities/EntitySlime.cs

@@ -14,7 +14,7 @@ namespace Substrate.Entities
             new SchemaNodeScaler("Size", TagType.TAG_INT),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "Slime"; }
         }

SubstrateCS/Source/Entities/EntitySmallFireball.cs

@@ -13,7 +13,7 @@ namespace Substrate.Entities
             new SchemaNodeString("id", TypeId),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "SmallFireball"; }
         }

SubstrateCS/Source/Entities/EntitySnowman.cs

@@ -13,7 +13,7 @@ namespace Substrate.Entities
             new SchemaNodeString("id", TypeId),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "SnowMan"; }
         }

SubstrateCS/Source/Entities/EntitySpider.cs

@@ -13,7 +13,7 @@ namespace Substrate.Entities
             new SchemaNodeString("id", TypeId),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "Spider"; }
         }

SubstrateCS/Source/Entities/EntitySquid.cs

@@ -13,7 +13,7 @@ namespace Substrate.Entities
             new SchemaNodeString("id", TypeId),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "Squid"; }
         }

SubstrateCS/Source/Entities/EntityVillager.cs

@@ -23,7 +23,7 @@ namespace Substrate.Entities
             new SchemaNodeScaler("Profession", TagType.TAG_INT),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "Villager"; }
         }

SubstrateCS/Source/Entities/EntityWolf.cs

@@ -16,7 +16,7 @@ namespace Substrate.Entities
             new SchemaNodeScaler("Angry", TagType.TAG_BYTE),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "Wolf"; }
         }

SubstrateCS/Source/Entities/EntityZombie.cs

@@ -13,7 +13,7 @@ namespace Substrate.Entities
             new SchemaNodeString("id", TypeId),
         });
 
-        public static string TypeId
+        public static new string TypeId
         {
             get { return "Zombie"; }
         }