private static void PackFilesToDirectory(string path,  string searchString , VRage.Compression.MyZipArchive arc)
 {
     int len = path.Length + 1;
     foreach (var file in Directory.GetFiles(path, searchString, SearchOption.AllDirectories))
     {
         using (var inStream = File.Open(file, FileMode.Open, FileAccess.Read, FileShare.Read))
         {
             using (var outStream = arc.AddFile(file.Substring(len), VRage.Compression.CompressionMethodEnum.Deflated, VRage.Compression.DeflateOptionEnum.Maximum).GetStream(FileMode.Open, FileAccess.Write))
             {
                 inStream.CopyTo(outStream, 0x1000);
             }
         }
     }
 }