{"record":{"id":"0a84e09b98c5b85d","repo":"stride3d/stride","slug":"asset-of-type-assettype-has-been-serialized-with-newer","errorCode":null,"errorMessage":"Asset of type {assetType} has been serialized with newer version {serializedVersion}, but only version {expectedVersion} is supported. Was this asset created with a newer version of Stride?","messagePattern":"Asset of type (.+?) has been serialized with newer version (.+?), but only version (.+?) is supported\\. Was this asset created with a newer version of Stride\\?","errorType":"exception","errorClass":"InvalidOperationException","httpStatus":null,"severity":"error","filePath":"sources/assets/Stride.Core.Assets/AssetMigration.cs","lineNumber":120,"sourceCode":"                            }\n                        }\n\n                        yamlEventReader.Expect<MappingEnd>();\n                    }\n                    break;\n                }\n                else\n                {\n                    // If anything else than Id or SerializedVersion, let's stop\n                    break;\n                }\n            }\n        }\n\n        if (serializedVersion > expectedVersion)\n        {\n            // Try to open an asset newer than what we support (probably generated by a newer Stride)\n            throw new InvalidOperationException($\"Asset of type {assetType} has been serialized with newer version {serializedVersion}, but only version {expectedVersion} is supported. Was this asset created with a newer version of Stride?\");\n        }\n\n        if (serializedVersion < expectedVersion)\n        {\n            // Perform asset upgrade\n            context.Log.Verbose($\"{Path.GetFullPath(assetFullPath)} needs update, from version {serializedVersion} to version {expectedVersion}\");\n\n            using var yamlAsset = loadAsset.AsYamlAsset();\n            var yamlRootNode = yamlAsset.RootNode;\n\n            // Check if there is any asset updater\n            var assetUpgraders = AssetRegistry.GetAssetUpgraders(assetType, dependencyName)\n                ?? throw new InvalidOperationException($\"Asset of type {assetType} should be updated from version {serializedVersion} to {expectedVersion}, but no asset migration path was found\");\n\n            // Instantiate asset updaters\n            var currentVersion = serializedVersion;\n            while (currentVersion != expectedVersion)\n            {","sourceCodeStart":102,"sourceCodeEnd":138,"githubUrl":"https://github.com/stride3d/stride/blob/96fad776d210c221682aac1ccdf4c79dc046fc38/sources/assets/Stride.Core.Assets/AssetMigration.cs#L102-L138","documentation":"MigrateAssetIfNeeded compares the asset file's serializedVersion against the currently supported (upgrader) version for its type. A serializedVersion GREATER than expected means the file was written by a newer Stride than the running one, and migration cannot go backwards, so it throws InvalidOperationException.","triggerScenarios":"Opening/saving an asset whose YAML metadata records a higher AssetVersion than the loaded assembly's AssetUpgraders provide; loading game content produced by a newer Stride editor or a newer package version.","commonSituations":"Team members on different Stride versions sharing the same game assets; pulling assets from a template/project built with a newer release; running an older build of the game against newer content.","solutions":["Upgrade the Stride packages/runtime to a version matching or exceeding the asset's serialized version","Re-export/re-save the asset from the newer Stride version down if downgrade is supported by the asset pipeline","Regenerate the asset with the current Stride version (reimport the source)","Restore the asset file from version control to a version compatible with the installed SDK"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":"var meta = ReadYamlMetadata(assetPath);\nvar supported = AssetRegistry.GetUpgrader(assetType).CurrentVersion;\nif (meta?.AssetVersion > supported)\n    throw new InvalidOperationException($\"Asset needs Stride version supporting version {meta.AssetVersion}\");","typeGuard":null,"tryCatchPattern":"try { PackageSession.Load(...); }\ncatch (InvalidOperationException ex) when (ex.Message.Contains(\"serialized with newer version\"))\n{ log.Error(\"Content was built with a newer Stride; upgrade the SDK or re-export the asset.\"); }","preventionTips":["Keep all team members on the same Stride SDK version","Pin template/project Stride versions in CI","Re-import assets from source when switching SDK versions downward"],"tags":["versioning","migration","assets"],"backgroundTag":"version-incompatible","analyzedSha":"96fad776d210c221682aac1ccdf4c79dc046fc38","analyzedAt":"2026-09-14T02:59:31.279Z","contentChangedAt":"2026-09-14T02:59:31.279Z","schemaVersion":2},"datasetVersion":"2026-09-15T23:17:13.987Z"}