diff --git a/DD2Switcher/Program.cs b/DD2Switcher/Program.cs
index 6095b5f..6c37586 100644
--- a/DD2Switcher/Program.cs
+++ b/DD2Switcher/Program.cs
@@ -47,6 +47,23 @@ namespace DD2Switcher {
 
         public static void StartSequenceMode() {
             Console.WriteLine($"StartSequenceMode called. FirstIndex: {FirstIndex}, LastIndex: {LastIndex}");
+
+            // Compute default indices if not set by user
+            if (FirstIndex == -1 || LastIndex == -1) {
+                FirstIndex = FindFirstNonNullWindow();
+                LastIndex = FindLastNonNullWindow();
+                Console.WriteLine($"Computed default indices: FirstIndex={FirstIndex}, LastIndex={LastIndex}");
+
+                // Ensure LastIndex is different from FirstIndex if there are multiple windows
+                if (FirstIndex != -1 && LastIndex != -1 && FirstIndex == LastIndex) {
+                    int nextWindow = FindNextNonNullWindow(FirstIndex + 1);
+                    if (nextWindow != -1) {
+                        LastIndex = nextWindow;
+                        Console.WriteLine($"Adjusted LastIndex to: {LastIndex} (different from FirstIndex)");
+                    }
+                }
+            }
+
             if (FirstIndex >= 0 && LastIndex >= 0 && FirstIndex <= LastIndex) {
                 CurrentState = SequenceState.PROCESSING;
                 CurrentSequenceIndex = FirstIndex;
@@ -101,6 +118,8 @@ namespace DD2Switcher {
                     SequenceKeybind = settings.SequenceKeybind;
                     Console.WriteLine(
                         $"Loaded settings: First={FirstIndex}, Last={LastIndex}, Keybind={SequenceKeybind}");
+                } else {
+                    Console.WriteLine("No settings file found, using defaults");
                 }
             } catch (Exception ex) {
                 Console.WriteLine($"Error loading settings: {ex.Message}");
@@ -155,6 +174,16 @@ namespace DD2Switcher {
                 LastIndex = FindLastNonNullWindow();
                 Console.WriteLine($"Set default LastIndex to: {LastIndex}");
             }
+
+            // Ensure LastIndex is different from FirstIndex if there are multiple windows
+            if (FirstIndex != -1 && LastIndex != -1 && FirstIndex == LastIndex) {
+                // Find the next non-null window after FirstIndex
+                int nextWindow = FindNextNonNullWindow(FirstIndex + 1);
+                if (nextWindow != -1) {
+                    LastIndex = nextWindow;
+                    Console.WriteLine($"Adjusted LastIndex to: {LastIndex} (different from FirstIndex)");
+                }
+            }
         }
 
         public static void UpdateSequenceHotkey(Keys newKey) {
@@ -175,6 +204,10 @@ namespace DD2Switcher {
             SaveSettings();
         }
 
+        public static void SaveFirstLastIndices() {
+            SaveSettings();
+        }
+
         // Static properties for first/last selection persistence
         public static int FirstIndex { get; set; } = -1;
         public static int LastIndex { get; set; } = -1;
@@ -371,10 +404,6 @@ namespace DD2Switcher {
             PushHistory(firstNullIndex);
             ActiveIndex = firstNullIndex;
             Console.WriteLine($"Added {process.ProcessName} to tracked windows at index {firstNullIndex}");
-
-            // Set default first/last indices if not set
-            SetDefaultFirstLastIndices();
-            SaveSettings();
         }
 
         private static void TrackProcess() {