generator = new RecipeGenerator(profile.Reactions);

            generator.InitRecipes(profile.Recipes);

            generator.Progress += OnProgress;

            generator.Finished += OnFinished;

            generator.NewRecipe += OnNewRecipe;

            string stateFile = System.IO.Path.Combine(profile.Directory, STATE_FILE);

            if (System.IO.File.Exists(stateFile))

            {

                generator.LoadState(stateFile);

                if (generator.CanResume)

                {

                    beginButton.Label = "Restart";

                    stopResumeButton.Label = "Resume";

                    stopResumeButton.Sensitive = true;

                    maxRecipeSpinButton.Value = Math.Max(generator.MaxQuantity, 14); //

                    fullQuantitySpinButton.Value = generator.FullQuantity; // TODO: read/save profile info

                    fullQuantityDepthSpinButton.Value = generator.FullQuantityDepth; // TODO: read/save profile info

                    maxIngredientsSpinButton.Value = generator.MaxReagents;

                }

            }

            countLabel.Text = String.Format("{0} / {1}", profile.RecipeCount, Palette.Count);

            Destroyed += OnDestroyed;

            notifyFinished = new Gtk.ThreadNotify(new Gtk.ReadyEvent(HandleFinished));

            notifyProgress = new Gtk.ThreadNotify(new Gtk.ReadyEvent(HandleProgress));

            notifyNewRecipe = new Gtk.ThreadNotify(new Gtk.ReadyEvent(HandleNewRecipe));

            // initialize reagent list

            // Add the columns to the TreeView

            Gtk.TreeViewColumn reagentEnabledColumn = new Gtk.TreeViewColumn ();

            reagentEnabledColumn.Title = "Enabled";

            Gtk.CellRendererToggle reagentEnabledCell = new Gtk.CellRendererToggle ();

            reagentEnabledCell.Activatable = true;

            reagentEnabledCell.Sensitive = true;

            reagentEnabledCell.Mode = Gtk.CellRendererMode.Activatable;

            reagentEnabledCell.Toggled += new Gtk.ToggledHandler(OnReagentEnableToggled);

            reagentEnabledColumn.PackStart (reagentEnabledCell, true);

            //reagentEnabledColumn.AddAttribute(reagentEnabledCell, "active", 0);

            Gtk.TreeViewColumn reagentNameColumn = new Gtk.TreeViewColumn ();

            reagentNameColumn.Title = "Ingredient";

            Gtk.CellRendererText reagentNameCell = new Gtk.CellRendererText ();