fix: Fixes to Data asset system

RefinedRDApi.uplugin

@@ -1,8 +1,8 @@
 {
 	"FileVersion": 3,
-	"Version": 1,
+	"Version": 2026,
-	"VersionName": "1.0.7",
+	"VersionName": "2026.3.2",
-	"SemVersion": "1.0.7",
+	"SemVersion": "2026.3.2",
 	"FriendlyName": "Refined R&D Api",
 	"Description": "This Lib can be used to create Mod Compatability with Refined R&D Mods",
 	"Category": "Modding",

Source/RefinedRDApi/Private/Subsystems/RRDADataAssetSubsystem.cpp

@@ -408,7 +408,8 @@ TArray<URRDATurbineDataAsset*> URRDADataAssetSubsystem::GetAllTurbineAssets(int3
 }
 
 URRDATurbineDataAsset* URRDADataAssetSubsystem::GetDefaultTurbineAsset(int32 Tier) const {
-	return GetAllTurbineAssets(Tier).Top();
+	TArray<URRDATurbineDataAsset*> Assets = GetAllTurbineAssets(Tier);
+	return Assets.Num() > 0 ? Assets.Top() : nullptr;
 }
 
 URRDATurbineDataAsset* URRDADataAssetSubsystem::GetTurbineItemData(TSubclassOf<UFGItemDescriptor> Item, int32 Tier) const {
@@ -435,7 +436,8 @@ URRDACoolerDataAsset* URRDADataAssetSubsystem::GetCoolerItemData(TSubclassOf<UFG
 }
 
 URRDACoolerDataAsset* URRDADataAssetSubsystem::GetDefaultCoolerAsset(ERRDACoolerType Type) const {
-	return GetAllCoolerAssets(Type).Top();
+	TArray<URRDACoolerDataAsset*> Assets = GetAllCoolerAssets(Type);
+	return Assets.Num() > 0 ? Assets.Top() : nullptr;
 }
 
 TArray<URRDACoolerDataAsset*> URRDADataAssetSubsystem::GetAllCoolerAssets(ERRDACoolerType Type) const {
@@ -481,7 +483,8 @@ bool URRDADataAssetSubsystem::GetAllBoilerRelevantItems(TArray<TSubclassOf<UFGIt
 }
 
 URRDABoilerDataAsset* URRDADataAssetSubsystem::GetDefaultBoilerAsset(int32 Tier) const {
-	return GetAllBoilerAssets(Tier).Top();
+	TArray<URRDABoilerDataAsset*> Assets = GetAllBoilerAssets(Tier);
+	return Assets.Num() > 0 ? Assets.Top() : nullptr;
 }
 
 TArray<URRDABoilerDataAsset*> URRDADataAssetSubsystem::GetAllBoilerAssets(int32 Tier) const {
@@ -522,7 +525,8 @@ bool URRDADataAssetSubsystem::GetAllHeaterRelevantItems(TArray<TSubclassOf<UFGIt
 }
 
 URRDAHeaterDataAsset* URRDADataAssetSubsystem::GetDefaultHeaterAsset(ERRDAHeaterType Type) const {
-	return GetAllHeaterAssets(Type).Top();
+	TArray<URRDAHeaterDataAsset*> Assets = GetAllHeaterAssets(Type);
+	return Assets.Num() > 0 ? Assets.Top() : nullptr;
 }
 
 TArray<URRDAHeaterDataAsset*> URRDADataAssetSubsystem::GetAllHeaterAssets(ERRDAHeaterType Type) const {