diff --git a/src/htm/Main.cs b/src/htm/Main.cs
index a342bbe4..5ecc2080 100644
--- a/src/htm/Main.cs
+++ b/src/htm/Main.cs
@@ -36,27 +36,45 @@ namespace thememan
 {
     public partial class HTM : Form
     {
-        public string appdata = (Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) + "\\HexChat\\");
-        public string home = (Environment.GetFolderPath(Environment.SpecialFolder.Personal) + "/.config/hexchat/");
-
-        public string xchatdir;
-        public string themedir = "themes\\";
+        public string hexchatdir;
+        public string themedir;
 
         OpenFileDialog importDialog;
 
         public HTM ()
-		{
-			InitializeComponent ();
-            
-			if (File.Exists ("portable-mode"))
-				xchatdir = ("config\\");
-			else if (Directory.Exists (appdata))
-				xchatdir = (appdata);
-			else if (Directory.Exists (home)) {
-				xchatdir = (home); themedir = "themes/";
-			} else
-				Console.WriteLine("Install not found");
+        {
+            InitializeComponent ();
 
+            if (RunningOnWindows() && File.Exists("portable-mode"))
+            {
+                hexchatdir = ("config\\");
+
+                if (!Directory.Exists(hexchatdir))
+                {
+                    MessageBox.Show("HexChat installation not found!\nCheck your .\\config folder", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    Environment.Exit(1);
+                }
+            }
+            else
+            {
+                hexchatdir = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "hexchat");
+
+                if (!Directory.Exists(hexchatdir))
+                {
+                    if (RunningOnWindows())
+                    {
+                        MessageBox.Show("HexChat installation not found!\nCheck your %APPDATA%\\HexChat folder", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);    
+                    }
+                    else
+                    {
+                        MessageBox.Show("HexChat installation not found!\nCheck your ~/.config/hexchat folder", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    }
+                    
+                    Environment.Exit(1);
+                }
+            }
+
+            themedir = Path.Combine(hexchatdir, "themes");
             ListThemes();
 
             String[] arguments = Environment.GetCommandLineArgs();
@@ -67,20 +85,32 @@ namespace thememan
             }
         }
 
+        private bool RunningOnWindows()
+        {
+            if (Environment.OSVersion.ToString().ToLower().Contains("windows"))
+            {
+                return true;
+            }
+            else
+            {
+                return false;
+            }
+        }
+
         private void ListThemes()
         {
             themelist.Items.Clear();
 
-            if (Directory.Exists(xchatdir + themedir))
+            if (Directory.Exists(themedir))
             {
-                foreach (string theme in Directory.GetDirectories(xchatdir + themedir))
+                foreach (string theme in Directory.GetDirectories(themedir))
                 {
-                    themelist.Items.Add(theme.Remove(0, xchatdir.Length + themedir.Length));
+                    themelist.Items.Add(theme.Remove(0, themedir.Length + 1));
                 }
             }
             else
             {
-                Directory.CreateDirectory(xchatdir + themedir);
+                Directory.CreateDirectory(themedir);
             }
 
             if (themelist.Items.Count == 0)
@@ -122,7 +152,7 @@ namespace thememan
         private List<List<string>> ReadTheme(string theme)
         {
             List<List<string>> themecolors = new List<List<string>>();
-            foreach (string line in File.ReadLines(xchatdir + themedir + theme + "/colors.conf"))
+            foreach (string line in File.ReadLines(Path.Combine(themedir, theme, "colors.conf")))
             {
                 List<string> colors = new List<string>();
                 List<string> colorlist = new List<string>();
@@ -149,10 +179,10 @@ namespace thememan
             DialogResult result = MessageBox.Show("HexChat must be closed and this will overwrite your current theme!\n\nDo you wish to continue?", "Warning", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning);
             if (result == DialogResult.OK)
             {
-                File.Copy(xchatdir + themedir + themelist.SelectedItem.ToString() + "\\colors.conf", xchatdir + "colors.conf", true);
-                if (File.Exists(xchatdir + themedir + themelist.SelectedItem.ToString() + "\\pevents.conf"))
+                File.Copy(Path.Combine(themedir, themelist.SelectedItem.ToString(), "colors.conf"), Path.Combine(hexchatdir, "colors.conf"), true);
+                if (File.Exists(Path.Combine(themedir, themelist.SelectedItem.ToString(), "pevents.conf")))
                 {
-                    File.Copy(xchatdir + themedir + themelist.SelectedItem.ToString() + "\\pevents.conf", xchatdir + "pevents.conf", true);
+                    File.Copy(Path.Combine(themedir, themelist.SelectedItem.ToString(), "pevents.conf"), Path.Combine(hexchatdir, "pevents.conf"), true);
                 }
             }
         }
@@ -242,7 +272,7 @@ namespace thememan
         private int extractTheme(FileInfo zipFile)
         {
             string themeName = zipFile.Name.Remove(zipFile.Name.Length - zipFile.Extension.Length);
-            string destFolder = xchatdir + themedir + themeName;
+            string destFolder = Path.Combine(themedir, themeName);
 
             try
             {
@@ -312,7 +342,7 @@ namespace thememan
             DialogResult result = MessageBox.Show("Are you sure you want to delete this theme from the theme repo?\n\nYour currently applied theme won't be affected.", "Warning", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning);
             if (result == DialogResult.OK)
             {
-                Directory.Delete(xchatdir + themedir + themelist.SelectedItem.ToString(), true);
+                Directory.Delete(Path.Combine(themedir, themelist.SelectedItem.ToString()), true);
                 ListThemes();
                 if (themelist.Items.Count == 0)
                 {