diff --git a/ArcFormats/DxLib/HuffmanDecoder.cs b/ArcFormats/DxLib/HuffmanDecoder.cs
index 11f61d86..4ab50dcd 100644
--- a/ArcFormats/DxLib/HuffmanDecoder.cs
+++ b/ArcFormats/DxLib/HuffmanDecoder.cs
@@ -45,7 +45,7 @@ namespace GameRes.Formats.DxLib
         public int ParentNode; // index of parent node.
         public int[] ChildNode; //two children nodes, -1 if not existent.
 
-        DXA8HuffmanNode()
+        internal DXA8HuffmanNode()
         {
             bitArray = new byte[32];
             ChildNode = new int[2];
@@ -96,6 +96,7 @@ namespace GameRes.Formats.DxLib
 
             for (int i=0; i<nodes.Length; i++)
             {
+                nodes[i] = new DXA8HuffmanNode();
                 nodes[i].ParentNode = -1;
                 nodes[i].ChildNode[0] = -1;
                 nodes[i].ChildNode[1] = -1;
@@ -338,7 +339,7 @@ namespace GameRes.Formats.DxLib
             {
                 if (0 == m_bit_count)
                 {
-                    m_bits = LittleEndian.ToUInt64 (m_input, m_src);
+                    m_bits = BigEndian.ToUInt64 (m_input, m_src);
                     m_src += 8;
                     m_bit_count = 64;
                 }
diff --git a/GameRes/Utility.cs b/GameRes/Utility.cs
index 315b9120..1547cd77 100644
--- a/GameRes/Utility.cs
+++ b/GameRes/Utility.cs
@@ -167,14 +167,23 @@ namespace GameRes.Utility
             return (short)(value[index] << 8 | value[index+1]);
         }
 
-        public static uint ToUInt32<TArray> (TArray value, int index) where TArray : IList<byte>
+        public static uint ToUInt32<TArray>(TArray value, int index) where TArray : IList<byte>
         {
-            return (uint)(value[index] << 24 | value[index+1] << 16 | value[index+2] << 8 | value[index+3]);
+            return (uint)(value[index] << 24 | value[index + 1] << 16 | value[index + 2] << 8 | value[index + 3]);
         }
 
-        public static int ToInt32<TArray> (TArray value, int index) where TArray : IList<byte>
+        public static int ToInt32<TArray>(TArray value, int index) where TArray : IList<byte>
         {
-            return (int)ToUInt32 (value, index);
+            return (int)ToUInt32(value, index);
+        }
+        public static ulong ToUInt64<TArray>(TArray value, int index) where TArray : IList<byte>
+        {
+            return (ulong)(value[index]<<56|value[index+1]<<48|value[index+2]<<40|value[index+3]<<32|value[index+4] << 24 | value[index + 5] << 16 | value[index + 6] << 8 | value[index + 7]);
+        }
+
+        public static long ToInt64<TArray>(TArray value, int index) where TArray : IList<byte>
+        {
+            return (long)ToUInt64(value, index);
         }
 
         public static void Pack (ushort value, byte[] buf, int index)