diff --git a/NHSE.Core/Save/Meta/EncryptedFilePair.cs b/NHSE.Core/Save/Meta/EncryptedFilePair.cs
index 5f074ca..fb8077a 100644
--- a/NHSE.Core/Save/Meta/EncryptedFilePair.cs
+++ b/NHSE.Core/Save/Meta/EncryptedFilePair.cs
@@ -77,19 +77,7 @@ public IEnumerable<FileHashRegion> InvalidHashes()
             }
         }
 
-        public string GetString(int offset, int maxLength)
-        {
-            var str = Encoding.Unicode.GetString(Data, offset, maxLength * 2);
-            return StringUtil.TrimFromZero(str);
-        }
-
-        public static byte[] GetBytes(string value, int maxLength)
-        {
-            if (value.Length > maxLength)
-                value = value.Substring(0, maxLength);
-            else if (value.Length < maxLength)
-                value = value.PadRight(maxLength, '\0');
-            return Encoding.Unicode.GetBytes(value);
-        }
+        public string GetString(int offset, int maxLength) => StringUtil.GetString(Data, offset, maxLength);
+        public static byte[] GetBytes(string value, int maxLength) => StringUtil.GetBytes(value, maxLength);
     }
 }
\ No newline at end of file
diff --git a/NHSE.Core/Util/StringUtil.cs b/NHSE.Core/Util/StringUtil.cs
index dc2173f..37f12a0 100644
--- a/NHSE.Core/Util/StringUtil.cs
+++ b/NHSE.Core/Util/StringUtil.cs
@@ -1,4 +1,6 @@
-using System.Runtime.CompilerServices;
+using System.IO;
+using System.Runtime.CompilerServices;
+using System.Text;
 
 namespace NHSE.Core
 {
@@ -20,5 +22,25 @@ private static string TrimFromFirst(string input, char c)
             int index = input.IndexOf(c);
             return index < 0 ? input : input.Substring(0, index);
         }
+
+        public static string GetString(byte[] data, int offset, int maxLength)
+        {
+            var str = Encoding.Unicode.GetString(data, offset, maxLength * 2);
+            return TrimFromZero(str);
+        }
+
+        public static byte[] GetBytes(string value, int maxLength)
+        {
+            if (value.Length > maxLength)
+                value = value.Substring(0, maxLength);
+            else if (value.Length < maxLength)
+                value = value.PadRight(maxLength, '\0');
+            return Encoding.Unicode.GetBytes(value);
+        }
+
+        public static string CleanFileName(string fileName)
+        {
+            return string.Concat(fileName.Split(Path.GetInvalidFileNameChars()));
+        }
     }
 }
\ No newline at end of file
diff --git a/NHSE.WinForms/Main.cs b/NHSE.WinForms/Main.cs
index d8d7a0f..0f92a8e 100644
--- a/NHSE.WinForms/Main.cs
+++ b/NHSE.WinForms/Main.cs
@@ -63,21 +63,30 @@ private void Menu_Open(object sender, EventArgs e)
 
         private static void Open(string path)
         {
+            #if !DEBUG
             try
+            #endif
             {
-                var file = new HorizonSave(path);
-                Open(file);
-
-                var settings = Settings.Default;
-                settings.LastFilePath = path;
-                settings.Save();
+                OpenSaveFile(path);
             }
+            #if !DEBUG
 #pragma warning disable CA1031 // Do not catch general exception types
             catch (Exception ex)
 #pragma warning restore CA1031 // Do not catch general exception types
             {
                 WinFormsUtil.Error(ex.Message);
             }
+            #endif
+        }
+
+        private static void OpenSaveFile(string path)
+        {
+            var file = new HorizonSave(path);
+            Open(file);
+
+            var settings = Settings.Default;
+            settings.LastFilePath = path;
+            settings.Save();
         }
     }
 }