CreateExport: Failed to load Outer for resource 'AssetImportData': MetaSoundSource

I had the same issue. I fixed it: Open your “…\UE_5.0EA\Engine\Plugins\Runtime\Metasound\Metasound.uplugin” and change all Loading Phases to PreDefault. That makes the plugin load up earlier.

"LoadingPhase": "PreDefault"
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