auto-pick the first list item if it exists

StabilityMatrix/ViewModels/InstallerViewModel.cs

@@ -128,14 +128,16 @@ public class InstallerViewModel : INotifyPropertyChanged
         if (settingsManager.Settings.InstalledPackages.FirstOrDefault(x => x.PackageName == SelectedPackage.Name) ==
             null)
         {
-            settingsManager.AddInstalledPackage(new InstalledPackage
+            var package = new InstalledPackage
             {
                 Name = SelectedPackage.Name,
                 Path = SelectedPackage.InstallLocation,
                 Id = Guid.NewGuid(),
                 PackageName = SelectedPackage.Name,
                 PackageVersion = "idklol"
-            });
+            };
+            settingsManager.AddInstalledPackage(package);
+            settingsManager.SetActiveInstalledPackage(package);
         }
     });
 

StabilityMatrix/ViewModels/LaunchViewModel.cs

@@ -97,6 +97,10 @@ public partial class LaunchViewModel : ObservableObject
     public void OnLoaded()
     {
         LoadPackages();
+        if (InstalledPackages.Any())
+        {
+            SelectedPackage = InstalledPackages[0];
+        }
     }
 
     private void LoadPackages()