diff --git a/pom.xml b/pom.xml
index 698d1020..1f5ea188 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 
     <groupId>net.md-5</groupId>
     <artifactId>mendax</artifactId>
-    <version>1.3.2-SNAPSHOT</version>
+    <version>1.4.2-SNAPSHOT</version>
     <packaging>jar</packaging>
 
     <name>Mendax</name>
diff --git a/src/main/java/net/md_5/mendax/PacketDefinitions.java b/src/main/java/net/md_5/mendax/PacketDefinitions.java
index f584b1f4..b4c42e12 100644
--- a/src/main/java/net/md_5/mendax/PacketDefinitions.java
+++ b/src/main/java/net/md_5/mendax/PacketDefinitions.java
@@ -16,7 +16,7 @@ public class PacketDefinitions {
         opCodes[0x01] = new OpCode[]{INT, STRING, BYTE, BYTE, BYTE, BYTE, BYTE};
         opCodes[0x02] = new OpCode[]{BYTE, STRING, STRING, INT};
         opCodes[0x03] = new OpCode[]{STRING};
-        opCodes[0x04] = new OpCode[]{LONG};
+        opCodes[0x04] = new OpCode[]{LONG, LONG};
         opCodes[0x05] = new OpCode[]{INT, SHORT, ITEM};
         opCodes[0x06] = new OpCode[]{INT, INT, INT};
         opCodes[0x07] = new OpCode[]{INT, INT, BOOLEAN};
@@ -33,7 +33,7 @@ public class PacketDefinitions {
         opCodes[0x12] = new OpCode[]{INT, BYTE};
         opCodes[0x13] = new OpCode[]{INT, BYTE};
         opCodes[0x14] = new OpCode[]{INT, STRING, INT, INT, INT, BYTE, BYTE, SHORT, METADATA};
-        opCodes[0x15] = new OpCode[]{INT, SHORT, BYTE, SHORT, INT, INT, INT, BYTE, BYTE, BYTE};
+        opCodes[0x15] = new OpCode[]{INT, ITEM,  INT, INT, INT, BYTE, BYTE, BYTE};
         opCodes[0x16] = new OpCode[]{INT, INT};
         opCodes[0x17] = new OpCode[]{INT, BYTE, INT, INT, INT, OPTIONAL_MOTION};
         opCodes[0x18] = new OpCode[]{INT, BYTE, INT, INT, INT, BYTE, BYTE, BYTE, SHORT, SHORT, SHORT, METADATA};
@@ -71,7 +71,7 @@ public class PacketDefinitions {
         opCodes[0x3A] = null; // Does not exist
         opCodes[0x3B] = null; // Does not exist
         opCodes[0x3C] = new OpCode[]{DOUBLE, DOUBLE, DOUBLE, FLOAT, INT_3, FLOAT, FLOAT, FLOAT};
-        opCodes[0x3D] = new OpCode[]{INT, INT, BYTE, INT, INT};
+        opCodes[0x3D] = new OpCode[]{INT, INT, BYTE, INT, INT, BOOLEAN};
         opCodes[0x3E] = new OpCode[]{STRING, INT, INT, INT, FLOAT, BYTE};
         //
         //
@@ -87,7 +87,7 @@ public class PacketDefinitions {
         //
         opCodes[0x64] = new OpCode[]{BYTE, BYTE, STRING, BYTE};
         opCodes[0x65] = new OpCode[]{BYTE};
-        opCodes[0x66] = new OpCode[]{BYTE, SHORT, BOOLEAN, SHORT, BOOLEAN, ITEM};
+        opCodes[0x66] = new OpCode[]{BYTE, SHORT, BYTE, SHORT, BYTE, ITEM};
         opCodes[0x67] = new OpCode[]{BYTE, SHORT, ITEM};
         opCodes[0x68] = new OpCode[]{BYTE, SHORT_ITEM};
         opCodes[0x69] = new OpCode[]{BYTE, SHORT, SHORT};
@@ -111,7 +111,7 @@ public class PacketDefinitions {
         opCodes[0xC9] = new OpCode[]{STRING, BOOLEAN, SHORT};
         opCodes[0xCA] = new OpCode[]{BYTE, BYTE, BYTE};
         opCodes[0xCB] = new OpCode[]{STRING};
-        opCodes[0xCC] = new OpCode[]{STRING, BYTE, BYTE, BYTE};
+        opCodes[0xCC] = new OpCode[]{STRING, BYTE, BYTE, BYTE, BOOLEAN};
         opCodes[0xCD] = new OpCode[]{BYTE};
         //
         //
@@ -122,7 +122,7 @@ public class PacketDefinitions {
         opCodes[0xFB] = null; // Does not exist
         opCodes[0xFC] = new OpCode[]{SHORT_BYTE, SHORT_BYTE};
         opCodes[0xFD] = new OpCode[]{STRING, SHORT_BYTE, SHORT_BYTE};
-        opCodes[0xFE] = new OpCode[]{};
+        opCodes[0xFE] = new OpCode[]{BYTE};
         opCodes[0xFF] = new OpCode[]{STRING};
     }
 }
diff --git a/src/main/java/net/md_5/mendax/datainput/MetaData.java b/src/main/java/net/md_5/mendax/datainput/MetaData.java
index 02985f40..62d84010 100644
--- a/src/main/java/net/md_5/mendax/datainput/MetaData.java
+++ b/src/main/java/net/md_5/mendax/datainput/MetaData.java
@@ -27,7 +27,9 @@ class MetaData extends Instruction {
                     STRING.read(in);
                     break;
                 case 5:
-                    skip(in, 5); // short, byte, short
+                    if (in.readShort() > 0) {
+                        skip(in, 3);
+                    }
                     break;
                 case 6:
                     skip(in, 12); //  int, int, int