stride3d/stride · error · InvalidOperationException

Could not find asset

Error message

Could not find asset {0} for bundle {1}

What it means

UpdateFromMember with NodeIndex.Empty means the node's root value itself is being replaced, which is forbidden for ObjectNode: an object node's value is fixed at construction and only its members/items may change. The method throws InvalidOperationException to enforce this invariant.

Solutions

1. Update individual members via their MemberNode.SetValue instead of replacing the root object.
2. Only call UpdateFromMember with a non-empty NodeIndex targeting a collection item.
3. If the whole object must be replaced, construct a new ObjectNode (or a new model) rather than mutating this one.

Example fix

// before
objectNode.UpdateFromMember(newObject, NodeIndex.Empty);
// after
objectNode.GetMember(nameof(MyType.Name)).Update(newObject.Name);

if (index == NodeIndex.Empty)
    throw new InvalidOperationException("Use MemberNode.SetValue to change members; ObjectNode root value is fixed");

bool CanUpdateRoot(GraphNode node) => node is not ObjectNode || node is not IObjectNode { }; // ObjectNode never allows empty-index update

try { node.UpdateFromMember(newValue, index); }
catch (InvalidOperationException ex) when (ex.Message.Contains("cannot be modified")) { /* rebuild the node or update members individually */ }

When it happens

Trigger: Calling UpdateFromMember(newValue, NodeIndex.Empty) on an ObjectNode — i.e. internal/derived code attempting to reassign the entire object instance held by the node instead of updating a member or collection item.

Common situations: Custom node framework extensions or undo/redo systems that try to swap the underlying object wholesale; refactoring MemberNode-style update code onto ObjectNode without adjusting the index.

Understand the failure class

Background: "Invalid state transition" errors: "status must be X, actually Y", "already rejected/charging/uninstalled", "cannot ... while running" — what they mean when a library rejects your call — this error's family across 31 libraries.

Related errors

• Expect name1=value1;name2=value2 format.
• Cannot modify a YamlAssetMetadata after it has been…
• (Name= ) already has a content.
• The given (Name= ) is not the current content of (Name= ).
• Two bundles with name

AI-assisted analysis of stride3d/stride@96fad776d2 (2026-09-14). Data as JSON: /api/errors/dbb392d1cf96d5f9. Report an issue: GitHub.

Appendix: source

Thrown at sources/assets/Stride.AssetCompiler/BundlePacker.cs:414

                                references.Add(chunkReference.Location);
                            }
                        }
                    }
                }
            }

            return references;
        }

        private void CollectReferences(DatabaseFileProvider databaseFileProvider, Bundle bundle, HashSet<string> assets, string assetUrl)
        {
            // Already included?
            if (!assets.Add(assetUrl))
                return;

            ObjectId objectId;
            if (!databaseFileProvider.ContentIndexMap.TryGetValue(assetUrl, out objectId))
                throw new InvalidOperationException(string.Format("Could not find asset {0} for bundle {1}", assetUrl, bundle.Name));

            // Include references
            foreach (var reference in GetChunkReferences(databaseFileProvider, ref objectId))
            {
                CollectReferences(databaseFileProvider, bundle, assets, reference);
            }
        }

        private void CollectBundle(DatabaseFileProvider databaseFileProvider, ResolvedBundle resolvedBundle, string assetUrl)
        {
            // Check if index map contains it already (that also means object id has been stored as well)
            if (resolvedBundle.DependencyIndexMap.ContainsKey(assetUrl) || resolvedBundle.IndexMap.ContainsKey(assetUrl))
                return;

            ObjectId objectId;
            if (!databaseFileProvider.ContentIndexMap.TryGetValue(assetUrl, out objectId))
                throw new InvalidOperationException(string.Format("Could not find asset {0} for bundle {1}", assetUrl, resolvedBundle.Name));

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