diff --git a/AssetRipper.Mining.PredefinedAssets/AssetRipper.Mining.PredefinedAssets.csproj b/AssetRipper.Mining.PredefinedAssets/AssetRipper.Mining.PredefinedAssets.csproj
index f028877..aceb12b 100644
--- a/AssetRipper.Mining.PredefinedAssets/AssetRipper.Mining.PredefinedAssets.csproj
+++ b/AssetRipper.Mining.PredefinedAssets/AssetRipper.Mining.PredefinedAssets.csproj
@@ -9,7 +9,7 @@
 		<CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
 		<Authors>ds5678</Authors>
 		<Company>AssetRipper</Company>
-		<Version>1.0.2</Version>
+		<Version>1.0.3</Version>
 		<AssemblyVersion>$(Version)</AssemblyVersion>
 		<PackageId>AssetRipper.Mining.PredefinedAssets</PackageId>
 		<PackageTags>C# Unity</PackageTags>
diff --git a/AssetRipper.Mining.PredefinedAssets/EngineResourceData.cs b/AssetRipper.Mining.PredefinedAssets/EngineResourceData.cs
index c34b0d5..2c415b0 100644
--- a/AssetRipper.Mining.PredefinedAssets/EngineResourceData.cs
+++ b/AssetRipper.Mining.PredefinedAssets/EngineResourceData.cs
@@ -4,6 +4,10 @@ namespace AssetRipper.Mining.PredefinedAssets;
 
 public readonly record struct EngineResourceData(Dictionary<long, Object> DefaultResources, Dictionary<long, Object> ExtraResources)
 {
+	public EngineResourceData() : this(new(), new())
+	{
+	}
+
 	public readonly string ToJson()
 	{
 		return JsonSerializer.Serialize(this, InternalSerializerContext.Default.EngineResourceData);
diff --git a/AssetRipper.Mining.PredefinedAssets/UnityPackageData.cs b/AssetRipper.Mining.PredefinedAssets/UnityPackageData.cs
index 9bbbcc5..876a780 100644
--- a/AssetRipper.Mining.PredefinedAssets/UnityPackageData.cs
+++ b/AssetRipper.Mining.PredefinedAssets/UnityPackageData.cs
@@ -21,8 +21,16 @@ public readonly record struct UnityPackageData(
 	bool UsedInPackageJson,
 	Dictionary<string, UnityGuid> Assemblies,
 	Dictionary<string, Dictionary<string, UnityGuid>> Scripts,
-	KeyValuePair<Object, UnityGuid>[] Assets)
+	Dictionary<Object, UnityGuid> Assets)
 {
+	public UnityPackageData(string name, string version, bool usedInPackageJson) : this(name, version, usedInPackageJson, new(), new(), new())
+	{
+	}
+
+	public UnityPackageData(string name, string version = "") : this(name, version, string.IsNullOrEmpty(version))
+	{
+	}
+
 	public readonly string ToJson()
 	{
 		return JsonSerializer.Serialize(this, InternalSerializerContext.Default.UnityPackageData);