- handle no driver selected

Mystify/ViewModels/MainWindowViewModel.cs

@@ -9,6 +9,7 @@ using System.Linq;
 using System.Windows.Input;
 using Avalonia.Controls;
 using Lib.Driver;
+using Lib.Logging;
 using Lib.Tools;
 using Mystify.Views;
 using ReactiveUI;
@@ -53,9 +54,17 @@ namespace Mystify.ViewModels
                 Filters = new List<FileDialogFilter> {new() {Extensions = new List<string> {DriverLoader.DRIVER_FILE_EXTENSION}, Name = "Mystify Driver"}}
             };
 
-            string driverPath = (await openFileDialog.ShowAsync(_mainWindow))[0];
+            string[] selectedPaths = await openFileDialog.ShowAsync(_mainWindow);
+            if (selectedPaths.Length == 0)
+            {
+                await Log.Write<MainWindowViewModel>("No Driver selected.");
+                return;
+            }
+            
+            string driverPath = selectedPaths[0];
             
-            _mainModel?.LoadDriverAndDevice(driverPath);
+            if (!string.IsNullOrEmpty(driverPath))
+                _mainModel?.LoadDriverAndDevice(driverPath);
             
             RaisePropertyChanged(() => SelectedDeviceText);
             RaisePropertyChanged(() => Channels);