diff --git a/Core/Libraries/Source/WWVegas/WW3D2/htree.cpp b/Core/Libraries/Source/WWVegas/WW3D2/htree.cpp
index 3abc52fb0bc..93dc7a35462 100644
--- a/Core/Libraries/Source/WWVegas/WW3D2/htree.cpp
+++ b/Core/Libraries/Source/WWVegas/WW3D2/htree.cpp
@@ -529,6 +529,11 @@ bool HTreeClass::Simple_Evaluate_Pivot
  *=============================================================================================*/
 void HTreeClass::Base_Update(const Matrix3D & root)
 {
+	// Validate Pivot array exists and has at least one element
+	if (Pivot == NULL || NumPivots <= 0) {
+		return;
+	}
+
 	PivotClass *pivot;
 
 	Pivot[0].Transform = root;
@@ -538,6 +543,11 @@ void HTreeClass::Base_Update(const Matrix3D & root)
 
 		pivot = &Pivot[piv_idx];
 
+		// Validate parent pointer before accessing it
+		if (pivot->Parent == NULL) {
+			continue;
+		}
+
 		assert(pivot->Parent != NULL);
 		Matrix3D::Multiply(pivot->Parent->Transform, pivot->BaseTransform, &(pivot->Transform));
 		pivot->IsVisible = 1;
diff --git a/Generals/Code/Libraries/Source/WWVegas/WW3D2/animobj.cpp b/Generals/Code/Libraries/Source/WWVegas/WW3D2/animobj.cpp
index 4cf15ff8292..3532d3bc922 100644
--- a/Generals/Code/Libraries/Source/WWVegas/WW3D2/animobj.cpp
+++ b/Generals/Code/Libraries/Source/WWVegas/WW3D2/animobj.cpp
@@ -766,6 +766,12 @@ void Animatable3DObjClass::Update_Sub_Object_Transforms(void)
 	*/
 	CompositeRenderObjClass::Update_Sub_Object_Transforms();
 
+	// Validate HTree exists before accessing it
+	if (HTree == NULL) {
+		Set_Hierarchy_Valid(true);
+		return;
+	}
+
 	/*
 	** Update the transforms
 	*/
diff --git a/Generals/Code/Libraries/Source/WWVegas/WW3D2/hlod.cpp b/Generals/Code/Libraries/Source/WWVegas/WW3D2/hlod.cpp
index e78a0f90527..3ba1b56f886 100644
--- a/Generals/Code/Libraries/Source/WWVegas/WW3D2/hlod.cpp
+++ b/Generals/Code/Libraries/Source/WWVegas/WW3D2/hlod.cpp
@@ -3348,15 +3348,31 @@ void HLodClass::Update_Sub_Object_Transforms(void)
 	*/
 	Animatable3DObjClass::Update_Sub_Object_Transforms();
 
+	// Validate HTree exists before accessing it
+	if (HTree == NULL) {
+		Set_Sub_Object_Transforms_Dirty(false);
+		return;
+	}
+
 	/*
 	** Put the computed transforms into our sub objects.
 	*/
 	int lod,model;
 
 	for (lod = 0; lod < LodCount; lod++) {
+		// Validate LOD array exists
+		if (Lod == NULL) {
+			break;
+		}
+
 		for (model = 0; model < Lod[lod].Count(); model++) {
 
 			RenderObjClass * robj = Lod[lod][model].Model;
+			// Validate render object pointer before using it
+			if (robj == NULL) {
+				continue;
+			}
+
 			int bone = Lod[lod][model].BoneIndex;
 
 			robj->Set_Transform(HTree->Get_Transform(bone));
@@ -3368,6 +3384,11 @@ void HLodClass::Update_Sub_Object_Transforms(void)
 	for (model = 0; model < AdditionalModels.Count(); model++) {
 
 		RenderObjClass * robj = AdditionalModels[model].Model;
+		// Validate render object pointer before using it
+		if (robj == NULL) {
+			continue;
+		}
+
 		int bone = AdditionalModels[model].BoneIndex;
 
 		robj->Set_Transform(HTree->Get_Transform(bone));
diff --git a/GeneralsMD/Code/Libraries/Source/WWVegas/WW3D2/animobj.cpp b/GeneralsMD/Code/Libraries/Source/WWVegas/WW3D2/animobj.cpp
index 15e089a0bab..18244838bc5 100644
--- a/GeneralsMD/Code/Libraries/Source/WWVegas/WW3D2/animobj.cpp
+++ b/GeneralsMD/Code/Libraries/Source/WWVegas/WW3D2/animobj.cpp
@@ -765,6 +765,12 @@ void Animatable3DObjClass::Update_Sub_Object_Transforms(void)
 	*/
 	CompositeRenderObjClass::Update_Sub_Object_Transforms();
 
+	// Validate HTree exists before accessing it
+	if (HTree == NULL) {
+		Set_Hierarchy_Valid(true);
+		return;
+	}
+
 	/*
 	** Update the transforms
 	*/
diff --git a/GeneralsMD/Code/Libraries/Source/WWVegas/WW3D2/hlod.cpp b/GeneralsMD/Code/Libraries/Source/WWVegas/WW3D2/hlod.cpp
index 261d70a2ff7..20ec6b48824 100644
--- a/GeneralsMD/Code/Libraries/Source/WWVegas/WW3D2/hlod.cpp
+++ b/GeneralsMD/Code/Libraries/Source/WWVegas/WW3D2/hlod.cpp
@@ -3348,15 +3348,31 @@ void HLodClass::Update_Sub_Object_Transforms(void)
 	*/
 	Animatable3DObjClass::Update_Sub_Object_Transforms();
 
+	// Validate HTree exists before accessing it
+	if (HTree == NULL) {
+		Set_Sub_Object_Transforms_Dirty(false);
+		return;
+	}
+
 	/*
 	** Put the computed transforms into our sub objects.
 	*/
 	int lod,model;
 
 	for (lod = 0; lod < LodCount; lod++) {
+		// Validate LOD array exists
+		if (Lod == NULL) {
+			break;
+		}
+
 		for (model = 0; model < Lod[lod].Count(); model++) {
 
 			RenderObjClass * robj = Lod[lod][model].Model;
+			// Validate render object pointer before using it
+			if (robj == NULL) {
+				continue;
+			}
+
 			int bone = Lod[lod][model].BoneIndex;
 
 			robj->Set_Transform(HTree->Get_Transform(bone));
@@ -3368,6 +3384,11 @@ void HLodClass::Update_Sub_Object_Transforms(void)
 	for (model = 0; model < AdditionalModels.Count(); model++) {
 
 		RenderObjClass * robj = AdditionalModels[model].Model;
+		// Validate render object pointer before using it
+		if (robj == NULL) {
+			continue;
+		}
+
 		int bone = AdditionalModels[model].BoneIndex;
 
 		robj->Set_Transform(HTree->Get_Transform(bone));