diff --git a/src/main/java/com/loohp/limbo/registry/PacketRegistry.java b/src/main/java/com/loohp/limbo/registry/PacketRegistry.java
index a7cfb23..89a0c02 100644
--- a/src/main/java/com/loohp/limbo/registry/PacketRegistry.java
+++ b/src/main/java/com/loohp/limbo/registry/PacketRegistry.java
@@ -133,7 +133,7 @@ public class PacketRegistry {
                     JSONObject jsonIds = (JSONObject) jsonMappings.get(boundKey);
                     for (Object objPacketKey : jsonIds.keySet()) {
                         String packetKey = (String) objPacketKey;
-                        idMapping.put(Key.key(packetKey), (int) (long) ((JSONObject) jsonIds.get(packetKey)).get("protocol_id"));
+                        idMapping.put(Key.key(packetKey), ((Number) ((JSONObject) jsonIds.get(packetKey)).get("protocol_id")).intValue());
                     }
                     mappings.put(packetBound, idMapping);
                 }
diff --git a/src/main/java/com/loohp/limbo/world/GeneratedBlockDataMappings.java b/src/main/java/com/loohp/limbo/world/GeneratedBlockDataMappings.java
index f1a7929..67b77dd 100644
--- a/src/main/java/com/loohp/limbo/world/GeneratedBlockDataMappings.java
+++ b/src/main/java/com/loohp/limbo/world/GeneratedBlockDataMappings.java
@@ -20,6 +20,7 @@
 package com.loohp.limbo.world;
 
 import com.loohp.limbo.Limbo;
+import net.querz.nbt.io.SNBTUtil;
 import net.querz.nbt.tag.CompoundTag;
 import org.json.simple.JSONArray;
 import org.json.simple.JSONObject;
@@ -56,36 +57,46 @@ public class GeneratedBlockDataMappings {
 	
 	@SuppressWarnings("unchecked")
 	public static int getGlobalPaletteIDFromState(CompoundTag tag) {
-		String blockname = tag.getString("Name");
-		
-		JSONObject data = (JSONObject) globalPalette.get(blockname);
-		Object obj = data.get("properties");
-		if (obj == null) {
-			return (int) (long) ((JSONObject) ((JSONArray) data.get("states")).get(0)).get("id");
-		}
-		
-		//JSONObject properties = (JSONObject) obj;
-		
-		if (tag.containsKey("Properties")) {
-			CompoundTag blockProp = tag.get("Properties", CompoundTag.class);
-			Map<String, String> blockstate = new HashMap<>();
-			for (String key : blockProp.keySet()) {
-				blockstate.put(key, blockProp.getString(key));
+		try {
+			String blockname = tag.getString("Name");
+
+			JSONObject data = (JSONObject) globalPalette.get(blockname);
+			Object obj = data.get("properties");
+			if (obj == null) {
+				return ((Number) ((JSONObject) ((JSONArray) data.get("states")).get(0)).get("id")).intValue();
 			}
-			
-			for (Object entry : (JSONArray) data.get("states")) {
-				JSONObject jsonobj = (JSONObject) entry;
-				if (((JSONObject) jsonobj.get("properties")).keySet().stream().allMatch(key -> Objects.equals(blockstate.get(key), ((JSONObject) jsonobj.get("properties")).get(key)))) {
-					return (int) (long) jsonobj.get("id");
+
+			if (tag.containsKey("Properties")) {
+				CompoundTag blockProp = tag.get("Properties", CompoundTag.class);
+				Map<String, String> blockstate = new HashMap<>();
+				for (String key : blockProp.keySet()) {
+					blockstate.put(key, blockProp.getString(key));
+				}
+
+				for (Object entry : (JSONArray) data.get("states")) {
+					JSONObject jsonobj = (JSONObject) entry;
+					if (((JSONObject) jsonobj.get("properties")).keySet().stream().allMatch(key -> Objects.equals(blockstate.get(key), ((JSONObject) jsonobj.get("properties")).get(key)))) {
+						return ((Number) jsonobj.get("id")).intValue();
+					}
 				}
 			}
-		}
-		
-		for (Object entry : (JSONArray) data.get("states")) {
-			if (((JSONObject) entry).containsKey("default") && ((boolean) ((JSONObject) entry).get("default"))) {
-				return (int) (long) ((JSONObject) entry).get("id");
+
+			for (Object entry : (JSONArray) data.get("states")) {
+				if (((JSONObject) entry).containsKey("default") && ((boolean) ((JSONObject) entry).get("default"))) {
+					return ((Number) ((JSONObject) entry).get("id")).intValue();
+				}
 			}
-		}
+
+			throw new IllegalStateException();
+		} catch (Throwable e) {
+			String snbt;
+            try {
+				snbt = SNBTUtil.toSNBT(tag);
+            } catch (IOException e1) {
+				snbt = tag.valueToString();
+            }
+			new IllegalStateException("Unable to get global palette id for " + snbt + " (Is this scheme created in the same Minecraft version as Limbo?)", e).printStackTrace();
+        }
 		return 0;
 	}