SubtitleEdit: Loading plugins with its assembly located in custom directory

public string DoAction(Form parentForm, string srtText, double frame, string uiLineBreak, string file,
        string videoFile, string rawText)
    {
        // HI2UC.dll
        // Solution: Works if this events is regstered in SubtitleEdit.exe e.g: in method that loads the plugins
        AppDomain.CurrentDomain.AssemblyResolve += (sender, args) =>
        {
            var assemblyName = new AssemblyName(args.Name);

            Debug.WriteLine($"Loading assembly {assemblyName.Name}");
            // Assembly.GetExecutingAssembly().Location
            // IMPORTANT: Assembly.GetExecutingAssembly().Location == string.empty because the assembly are read as by and then loaded in SubtitleEdit:Main.cs
            var assemblyFile = Path.Combine(Assembly.GetExecutingAssembly().Location,
                "libs", assemblyName.Name + ".dll");

            if (File.Exists(assemblyFile))
            {
                Debug.WriteLine($"Assembly {assemblyName.Name} found at {assemblyFile}");
                return Assembly.LoadFile(assemblyFile);
            }

            return null;
        };

#if DEBUG
        /// <summary>
        /// Launch and attach a debugger to the process if it's not already attached.
        /// This is helpful when a need arises to debug code in the startup sequence of an application
        /// or to debug issues that occur when a debugger isn't already attached.
        /// </summary>
        if (!Debugger.IsAttached)
        {
            Debugger.Launch();
        }
#endif
        // Make sure subtitle isn't null or empty
        if (string.IsNullOrWhiteSpace(srtText))
        {
            MessageBox.Show("No subtitle loaded", parentForm.Text, MessageBoxButtons.OK, MessageBoxIcon.Warning);
            return string.Empty;
        }

        // Use custom separator for list view new lines
        if (!string.IsNullOrEmpty(uiLineBreak))
        {
            Options.UILineBreak = uiLineBreak;
        }

        // Get subtitle raw lines
        var list = new List<string>(srtText.SplitToLines());
        var srt = new SubRip();
        var sub = new Subtitle(srt);

        // Load raws subtitle lines into Subtitle object
        srt.LoadSubtitle(sub, list, file);

        IPlugin hi2Uc = this;
        using (var form = new PluginForm(sub, hi2Uc.Name, hi2Uc.Description))
        {
            if (form.ShowDialog(parentForm) == DialogResult.OK)
            {
                return form.Subtitle;
            }
        }

        return string.Empty;
    }