diff --git a/BlendFile/Reader.cs b/BlendFile/Reader.cs
index dfcc8f2..5c97c40 100644
--- a/BlendFile/Reader.cs
+++ b/BlendFile/Reader.cs
@@ -49,7 +49,14 @@ public class Reader {
     /// </summary>
     /// <param name="memAddr">memory address in current system endianness</param>
     /// <returns>A <see cref="Kaitai.BlendFile.FileBlock"/> object</returns>
-    public FileBlock? GetBlock(long memAddr) => memBlocks.SkipWhile(x => x.Key < memAddr).FirstOrDefault().Value;
+    public FileBlock? GetBlock(long memAddr)
+    {
+        
+        var blocks = OrderedBlocks.Where(x =>
+            memAddr >= x.MemAddr.ToPointer() && memAddr < x.MemAddr.ToPointer() + x.LenBody);
+
+        return blocks.MaxBy(x => x.LenBody);
+    }
 
     /// <summary>
     /// Creates a new instance of the <see cref="Reader"/> class
@@ -59,6 +66,8 @@ public class Reader {
         _path = path;
     }
 
+    public List<FileBlock> OrderedBlocks;
+
     /// <summary>
     /// Creates a new instance of the <see cref="Reader"/> class
     /// </summary>
@@ -82,8 +91,17 @@ public class Reader {
         var file = new KaitaiStream(_path);
         var blend = new Kaitai.BlendFile(file);
 
-        Console.WriteLine($"Start offset: 0x{blend.Blocks[0].MemAddr.ToPointer():X}");
+        
+        OrderedBlocks = blend.Blocks.OrderBy(x => x.MemAddr.ToPointer()).ToList();
+        
+        var startAddr = OrderedBlocks.Skip(1).SkipWhile(x => x.Code != "DNA1").First().MemAddr.ToPointer();
+        var endAddr = OrderedBlocks.Last().MemAddr.ToPointer();
+        
+        Console.WriteLine($"Start offset: 0x{startAddr:X}");
+        Console.WriteLine($"End offset: 0x{endAddr:X}");
+        Console.WriteLine($"Size in MB: {((endAddr - startAddr) / 1024 / 1024)}");
 
+        
         bool isLe = blend.Hdr.Endian == Endian.Le;
         //TODO: two blocks somehow have the same mem address... this sounds wrong.
         blend.Blocks.ForEach(block => memBlocks.TryAdd(block.MemAddr.ToMemAddr(isLe), block));
@@ -130,6 +148,9 @@ public class Reader {
                 // get the pointer value
                 var addr = GetBlockFieldDataOffset(obj.Key.Item1, f.GetCustomAttribute<DNAFieldAttribute>()!.OriginalIndex,
                     fieldInfo);
+                // dereference the pointer
+                addr = pointers.GetValueOrDefault(addr); 
+                if (addr == IntPtr.Zero) continue; // null pointer
                 // get the object that the pointer is pointing to if we've already converted it
                 var newobj = objects.GetValueOrDefault((addr, f.FieldType));
                 if (newobj != null)
@@ -140,7 +161,6 @@ public class Reader {
                     if (newobj != null) {
                         FillObject(addr, ref newobj, f.FieldType.GetFields());
                         f.SetValue(obj.Value, newobj);
-                        Objects.Add((addr, f.FieldType), newobj);
                     } // should never happen
                     else throw new NotSupportedException($"Type \"{f.FieldType}\" is unknown");
                 }
@@ -298,6 +318,7 @@ public class Reader {
         for (int i = 0; i < arrayAttribute.Size; i += 8) { 
             var itemData = new byte[8];
             Array.Copy(data, i, itemData, 0, 8);
+            if(itemData.ToPointer() == IntPtr.Zero) continue;
             object? cellData = ActivateInstance(type);
             FillObject(itemData.ToPointer(), ref cellData, type.GetFields());