diff --git a/ArcFormats/ArcNEKO.cs b/ArcFormats/ArcNEKO.cs
index 202ac81a..822d6a59 100644
--- a/ArcFormats/ArcNEKO.cs
+++ b/ArcFormats/ArcNEKO.cs
@@ -122,7 +122,7 @@ namespace GameRes.Formats.Neko
         static string[] KnownFileNames { get { return s_known_file_names.Value; } }
 
         static string[] s_known_dir_names = {
-            "image/actor", "image/back", "image/mask", "image/visual",
+            "image/actor", "image/back", "image/mask", "image/visual", "image/actor/big",
             "sound/bgm", "sound/env", "sound/se", "voice", "script", "system", "count",
         };
 
@@ -177,7 +177,7 @@ namespace GameRes.Formats.Neko
         {
             try
             {
-                var dir = Path.GetDirectoryName (System.Reflection.Assembly.GetExecutingAssembly().Location);
+                var dir = FormatCatalog.Instance.DataDirectory;
                 var lst_file = Path.Combine (dir, "nekopack.lst");
                 if (!File.Exists (lst_file))
                     return new string[0];
diff --git a/ArcFormats/NonColor/ArcDAT.cs b/ArcFormats/NonColor/ArcDAT.cs
index f89eae5d..67c7bee1 100644
--- a/ArcFormats/NonColor/ArcDAT.cs
+++ b/ArcFormats/NonColor/ArcDAT.cs
@@ -219,7 +219,7 @@ namespace GameRes.Formats.NonColor
         {
             if (null != LastAccessedScheme && LastAccessedScheme.Item1 == scheme.Hash)
                 return LastAccessedScheme.Item2;
-            var dir = Path.GetDirectoryName (System.Reflection.Assembly.GetExecutingAssembly().Location);
+            var dir = FormatCatalog.Instance.DataDirectory;
             var lst_file = Path.Combine (dir, PersistentFileMapName);
             var idx_file = Path.ChangeExtension (lst_file, ".idx");
             using (var idx_stream = File.OpenRead (idx_file))
diff --git a/GameRes/FormatCatalog.cs b/GameRes/FormatCatalog.cs
index 2f308ad3..f5fe25bc 100644
--- a/GameRes/FormatCatalog.cs
+++ b/GameRes/FormatCatalog.cs
@@ -70,11 +70,15 @@ namespace GameRes
 
         public int CurrentSchemeVersion { get; private set; }
         public string          SchemeID { get { return "GARbroDB"; } }
+        public string  AssemblyLocation { get { return m_gameres_dir.Value; } }
+        public string     DataDirectory { get { return AssemblyLocation; } }
 
         public Exception LastError { get; set; }
 
         public event ParametersRequestEventHandler  ParametersRequest;
 
+        private Lazy<string> m_gameres_dir = new Lazy<string> (() => Path.GetDirectoryName (System.Reflection.Assembly.GetExecutingAssembly().Location));
+
         private FormatCatalog ()
         {
             //An aggregate catalog that combines multiple catalogs
@@ -82,7 +86,7 @@ namespace GameRes
             //Adds all the parts found in the same assembly as the Program class
             catalog.Catalogs.Add (new AssemblyCatalog (typeof(FormatCatalog).Assembly));
             //Adds parts matching pattern found in the directory of the assembly
-            catalog.Catalogs.Add (new DirectoryCatalog (Path.GetDirectoryName (System.Reflection.Assembly.GetExecutingAssembly().Location), "Arc*.dll"));
+            catalog.Catalogs.Add (new DirectoryCatalog (AssemblyLocation, "Arc*.dll"));
 
             //Create the CompositionContainer with the parts in the catalog
             using (var container = new CompositionContainer (catalog))