diff --git a/Craftimizer/Utils/SynthesisValues.cs b/Craftimizer/Utils/SynthesisValues.cs
index 4d22243..494d177 100644
--- a/Craftimizer/Utils/SynthesisValues.cs
+++ b/Craftimizer/Utils/SynthesisValues.cs
@@ -48,6 +48,8 @@ internal sealed unsafe class SynthesisValues(AddonSynthesis* addon)
 
     private uint? TryGetUInt(int i)
     {
+        if (Addon == null)
+            return null;
         var value = Values[i];
         return value.Type == ValueType.UInt ?
             value.UInt :
@@ -56,6 +58,8 @@ internal sealed unsafe class SynthesisValues(AddonSynthesis* addon)
 
     private bool? TryGetBool(int i)
     {
+        if (Addon == null)
+            return null;
         var value = Values[i];
         return value.Type == ValueType.Bool ?
             value.Byte != 0 :
@@ -64,6 +68,8 @@ internal sealed unsafe class SynthesisValues(AddonSynthesis* addon)
 
     private SeString? TryGetString(int i)
     {
+        if (Addon == null)
+            return null;
         var value = Values[i];
         return value.Type switch
         {
diff --git a/Craftimizer/Windows/SynthHelper.cs b/Craftimizer/Windows/SynthHelper.cs
index c703f6c..4060db0 100644
--- a/Craftimizer/Windows/SynthHelper.cs
+++ b/Craftimizer/Windows/SynthHelper.cs
@@ -528,6 +528,9 @@ public sealed unsafe class SynthHelper : Window, IDisposable
 
     private void OnUseAction(ActionType action)
     {
+        if (!ShouldOpen || IsCollapsed)
+            return;
+
         (_, CurrentState) = new SimNoRandom().Execute(GetCurrentState(), action);
         CurrentActionCount = CurrentState.ActionCount;
         CurrentActionStates = CurrentState.ActionStates;