Fix runerigus/yamask partial load fail

320 is max hp (31IV 252EV), is this just -60 from max HP (threshold to
evolve at?)
might need some more research to see what is going on with this

only trycatch in release builds; was confused until I stepped thru and
saw the crash

PKHeX.Core/PKM/Util/FormConverter.cs

@@ -961,10 +961,20 @@ public static string[] GetFormArgumentStrings(int species, int form, int generat
             if (generation < 8)
                 return EMPTY;
 
+            static string[] GetBlank(int count)
+            {
+                var result = new string[count];
+                for (int i = 0; i < result.Length; i++)
+                    result[i] = i.ToString();
+                return result;
+            }
+
             return species switch
             {
                 (int) Furfrou when form != 0 => new[] {"0", "1", "2", "3", "4", "5"},
                 (int) Hoopa when form == 1 => new[] {"0", "1", "2", "3"},
+                (int) Yamask when form == 1 => GetBlank(320),
+                (int) Runerigus when form == 0 => GetBlank(320), // max Runerigus HP
                 (int) Alcremie => Enum.GetNames(typeof(AlcremieDecoration)),
                 _ => EMPTY
             };

PKHeX.WinForms/Controls/PKM Editor/PKMEditor.cs

@@ -243,8 +243,12 @@ private void LoadFieldsFromPKM(PKM pk, bool focus = true, bool skipConversionChe
 
             Entity = pk.Clone();
 
+#if !DEBUG
             try { GetFieldsfromPKM(); }
             catch { }
+#else
+            GetFieldsfromPKM();
+#endif
 
             Stats.UpdateIVs(null, EventArgs.Empty);
             UpdatePKRSInfected(null, EventArgs.Empty);