diff --git a/Common/Languages/English/Keyed/RealisticOrbitalTrade.xml b/Common/Languages/English/Keyed/RealisticOrbitalTrade.xml
index 6cda12e..6ff0b94 100644
--- a/Common/Languages/English/Keyed/RealisticOrbitalTrade.xml
+++ b/Common/Languages/English/Keyed/RealisticOrbitalTrade.xml
@@ -52,4 +52,5 @@
     <RealisticOrbitalTrade.OldTradeNonRenegotiable>(only trades made after renegotiation was added to the mod can be renegotiated)</RealisticOrbitalTrade.OldTradeNonRenegotiable>
     <RealisticOrbitalTrade.DidYouMeanToCancel>You've set all exchange of goods to zero. Did you intend to cancel the trade rather than renegotiate?</RealisticOrbitalTrade.DidYouMeanToCancel>
     <RealisticOrbitalTrade.NegotiatorTradeDialogInfo>Original negotiator: {0} (+{1})</RealisticOrbitalTrade.NegotiatorTradeDialogInfo>
+    <RealisticOrbitalTrade.RenegotiationWarning>I've done my very best to test this feature thoroughly, but it is quite complex, so I might have missed some detail or messed up somewhere. I strongly recommend you save your game each time before you use this feature until you've convinced yourself it works 100% correctly. If you encounter any unexpected or incorrect behavior I would very much appreciate it if you reported it to me.\n\nIf you choose "Confirm" below, this message will not show again.</RealisticOrbitalTrade.RenegotiationWarning>
 </LanguageData>
diff --git a/Source/RealisticOrbitalTrade/Core/RealisticOrbitalTradeMod.cs b/Source/RealisticOrbitalTrade/Core/RealisticOrbitalTradeMod.cs
index fd8be1e..73c0159 100644
--- a/Source/RealisticOrbitalTrade/Core/RealisticOrbitalTradeMod.cs
+++ b/Source/RealisticOrbitalTrade/Core/RealisticOrbitalTradeMod.cs
@@ -14,11 +14,13 @@ namespace RealisticOrbitalTrade;
 
 internal class RealisticOrbitalTradeMod : Mod
 {
-    private readonly ModContentPack content;
+#pragma warning disable CS8618 // Set by constructor
+    internal static RealisticOrbitalTradeMod instance;
+#pragma warning restore CS8618
 
     public RealisticOrbitalTradeMod(ModContentPack content) : base(content)
     {
-        this.content = content;
+        instance = this;
 
         // if (!ModsConfig.RoyaltyActive)
         // {
@@ -41,7 +43,7 @@ public override void DoSettingsWindowContents(Rect inRect)
 
     public override string SettingsCategory()
     {
-        return content.Name;
+        return Content.Name;
     }
 
     public static void Message(string msg)
diff --git a/Source/RealisticOrbitalTrade/Core/Settings.cs b/Source/RealisticOrbitalTrade/Core/Settings.cs
index c0bbf06..8785a71 100644
--- a/Source/RealisticOrbitalTrade/Core/Settings.cs
+++ b/Source/RealisticOrbitalTrade/Core/Settings.cs
@@ -6,11 +6,13 @@ namespace RealisticOrbitalTrade
     internal class Settings : ModSettings
     {
         private static bool _printDevMessages = false;
+        private static bool _renegotiationWarningShown = false;
         private static bool _activeTradePausesDepartureTimer = false;
         private static int _minTicksUntilDepartureBeforeGraceTime = 20000;
         private static int _departureGraceTimeTicks = 40000;
 
         internal static bool PrintDevMessages { get => _printDevMessages; set => _printDevMessages = value; }
+        internal static bool RenegotiationWarningShown { get => _renegotiationWarningShown; set => _renegotiationWarningShown = value; }
         internal static bool ActiveTradePausesDepartureTimer { get => _activeTradePausesDepartureTimer; set => _activeTradePausesDepartureTimer = value; }
         internal static int MinTicksUntilDepartureBeforeGraceTime { get => _minTicksUntilDepartureBeforeGraceTime; set => _minTicksUntilDepartureBeforeGraceTime = value; }
         internal static int DepartureGraceTimeTicks { get => _departureGraceTimeTicks; set => _departureGraceTimeTicks = value; }
@@ -19,7 +21,11 @@ public override void ExposeData()
         {
             base.ExposeData();
 
+            // Meta
             Scribe_Values.Look(ref _printDevMessages, "printDevMessages", false);
+            Scribe_Values.Look(ref _renegotiationWarningShown, "renegotiationWarningShown", false);
+
+            // Mod
             Scribe_Values.Look(ref _activeTradePausesDepartureTimer, "activeTradePausesDepartureTimer", false);
             Scribe_Values.Look(ref _minTicksUntilDepartureBeforeGraceTime, "minTicksUntilDeparture", 20000);
             Scribe_Values.Look(ref _departureGraceTimeTicks, "departureGraceTimeTicks", 40000);
@@ -32,7 +38,7 @@ public static void DoSettingsWindowContents(Rect inRect)
 
             if (Prefs.DevMode)
             {
-                listingStandard.CheckboxLabeled("DEV: Print dev messages", ref _printDevMessages);
+                listingStandard.CheckboxLabeled("DEV: Print dev log messages (rather verbose)", ref _printDevMessages);
             }
 
             listingStandard.CheckboxLabeled(
diff --git a/Source/RealisticOrbitalTrade/Dialogs/Dialog_RenegotiateTrade.cs b/Source/RealisticOrbitalTrade/Dialogs/Dialog_RenegotiateTrade.cs
index d0bbad0..9ee3624 100644
--- a/Source/RealisticOrbitalTrade/Dialogs/Dialog_RenegotiateTrade.cs
+++ b/Source/RealisticOrbitalTrade/Dialogs/Dialog_RenegotiateTrade.cs
@@ -78,10 +78,20 @@ public override void PreOpen()
         quickSearchWidget.Reset();
     }
 
+    private bool renegotiationMessageShown = false;
     public override void PostOpen()
     {
         base.PostOpen();
         CacheTradeables();
+
+        if (!Settings.RenegotiationWarningShown && !renegotiationMessageShown)
+        {
+            Find.WindowStack.Add(Dialog_MessageBox.CreateConfirmation("RealisticOrbitalTrade.RenegotiationWarning".Translate(), () =>
+            {
+                Settings.RenegotiationWarningShown = true;
+                RealisticOrbitalTradeMod.instance.WriteSettings();
+            }));
+        }
     }
 
     public override void PostClose()