diff --git a/HKX2Library b/HKX2Library
index 5ebd913..5156f4f 160000
--- a/HKX2Library
+++ b/HKX2Library
@@ -1 +1 @@
-Subproject commit 5ebd913bc4f188bf196a043178568a1e26b7ea49
+Subproject commit 5156f4f21fa04fad31ab39b07db83053941e09a5
diff --git a/hkxconv/Program.cs b/hkxconv/Program.cs
index ef09739..99d45e4 100644
--- a/hkxconv/Program.cs
+++ b/hkxconv/Program.cs
@@ -8,12 +8,24 @@ internal class Program
     {
         static async Task<int> Main(string[] args)
         {
+            if (args.Length == 1 && File.Exists(args[0]))
+            {
+                // drag n drop
+                var filePath = args[0];
+                var ext = Path.GetExtension(filePath);
+                args = ext switch
+                {
+                    ".xml" => new[] { "convert", "-v", "hkx", filePath },
+                    ".hkx" => new[] { "convert", "-v", "xml", filePath },
+                    _ => args
+                };
+            }
             var rootCommand = new RootCommand("Tool for convert HKX file to XML");
 
 
             var convertFormatOpt = new Option<ConvertFormat>(name: "-v", description: "Convert format.", getDefaultValue: () => ConvertFormat.xml);
             var verboseOpt = new Option<bool>(name: "--verbose", description: "verbose", getDefaultValue: () => false);
-            var ignoreErrorOpt = new Option<bool>(name: "--ignore-cast-error", description: "ignore fail to cast error(output will missing data. use with caution.)", getDefaultValue: () => false);
+            var ignoreErrorOpt = new Option<bool>(name: "--ignore-cast-error", description: "ignore fail to cast error(output may missing data. use with caution.)", getDefaultValue: () => false);
             var inputDirArg = new Argument<FileSystemInfo>("Input dir or file");
             var outputDirArg = new Argument<FileSystemInfo>("Output dir or file", getDefaultValue: () => new DirectoryInfo("."));
 
@@ -32,7 +44,6 @@ static async Task<int> Main(string[] args)
             {
                 cmd.Convert.ToFormat(input, output, format, verbose, ignoreErrorOpt);
             }, convertFormatOpt, verboseOpt, ignoreErrorOpt, inputDirArg, outputDirArg);
-
             return await rootCommand.InvokeAsync(args);
         }
     }
diff --git a/hkxconv/cmd/Convert.cs b/hkxconv/cmd/Convert.cs
index 8a1a641..816dc5d 100644
--- a/hkxconv/cmd/Convert.cs
+++ b/hkxconv/cmd/Convert.cs
@@ -6,7 +6,6 @@ public enum ConvertFormat
     {
         xml = 0,
         hkx = 1,
-        //win32 = 2,
     }
     public class Convert
     {
@@ -98,7 +97,7 @@ public static int ConvertTo(FileInfo inFile, FileInfo outFile, ConvertFormat for
             else if (format == ConvertFormat.hkx && Path.HasExtension(".xml"))
             {
                 var xd = new XmlDeserializer();
-                IHavokObject rootObject = xd.Deserialize(inFile.OpenRead(), header);
+                IHavokObject rootObject = xd.Deserialize(inFile.OpenRead(), header, ignoreError);
 
                 var bw = new BinaryWriterEx(outFile.Create());
                 var s = new PackFileSerializer();