Don't list Pytorch AIs if it wasn't found, save/load last used AI by name instead of index

Code/Form1.cs

@@ -109,9 +109,6 @@ namespace Flowframes
                 {
                     float factor = arg.Split('=').Last().GetFloat();
                     interpFactorCombox.Text = factor.ToString();
-                    //if (factor == 2) interpFactorCombox.SelectedIndex = 0;
-                    //if (factor == 4) interpFactorCombox.SelectedIndex = 1;
-                    //if (factor == 8) interpFactorCombox.SelectedIndex = 2;
                 }
 
                 if (arg.StartsWith("ai="))
@@ -272,10 +269,25 @@ namespace Flowframes
 
         void InitAis()
         {
-            foreach (AI ai in Implementations.networks)
-                aiCombox.Items.Add(ai.friendlyName + " - " + ai.description);
+            bool pytorchAvailable = Python.HasEmbeddedPyFolder() || Python.IsSysPyInstalled();
+
+            foreach (AI ai in Implementations.networks)
+            {
+                if (ai.backend == AI.Backend.Pytorch && !pytorchAvailable)
+                {
+                    Logger.Log($"AI implementation {ai.friendlyName} ({ai.backend}) has not been loaded because Pytorch was not found.", true);
+                    continue;
+                }
+                    
+
+                aiCombox.Items.Add(ai.friendlyName + " - " + ai.description);
+            }
+
+            string lastUsedAiName = Config.Get(Config.Key.lastUsedAiName);
+            aiCombox.SelectedIndex = Implementations.networks.IndexOf(Implementations.networks.Where(x => x.aiName == lastUsedAiName).FirstOrDefault());
+            if (aiCombox.SelectedIndex < 0) aiCombox.SelectedIndex = 0;
+            Config.Set(Config.Key.lastUsedAiName, GetAi().aiName);
 
-            ConfigParser.LoadComboxIndex(aiCombox);
             ConfigParser.LoadComboxIndex(outModeCombox);
         }
 
@@ -460,7 +472,7 @@ namespace Flowframes
             interpFactorCombox.SelectedIndex = 0;
 
             if (initialized)
-                ConfigParser.SaveComboxIndex(aiCombox);
+                Config.Set(Config.Key.lastUsedAiName, GetAi().aiName);
 
             interpFactorCombox_SelectedIndexChanged(null, null);
             fpsOutTbox.ReadOnly = GetAi().factorSupport != AI.FactorSupport.AnyFloat;

Code/IO/Config.cs

@@ -351,6 +351,7 @@ namespace Flowframes.IO
             keepSubs,
             keepTempFolder,
             loopMode,
+            lastUsedAiName,
             lowDiskSpaceCancelGb,
             lowDiskSpacePauseGb,
             maxFps,

Code/Magick/Dedupe.cs

@@ -227,10 +227,9 @@ namespace Flowframes.Magick
                 }
                 catch(Exception ex)
                 {
-                    Logger.Log(ex.Message);
+                    Logger.Log($"Deduplication error: {ex.Message}");
+                    Logger.Log($"Stack Trace:\n{ex.StackTrace}", true);
                 }
-                
-
             }
 
             File.WriteAllText(Path.Combine(framesPath.GetParentDir(), "dupes.json"), JsonConvert.SerializeObject(frames, Formatting.Indented));

Code/Os/Python.cs

@@ -35,6 +35,7 @@ namespace Flowframes.Os
                     compact.Start();
                     compact.BeginOutputReadLine();
                     compact.BeginErrorReadLine();
+
                     while (!compact.HasExited)
                     {
                         await Task.Delay(500);
@@ -44,6 +45,7 @@ namespace Flowframes.Os
                             shownPatienceMsg = true;
                             await Task.Delay(500);
                         }
+
                     }
                     Config.Set("compressedPyVersion", Updater.GetInstalledVer().ToString());
                     Logger.Log("Done compressing python runtime.");