In version 102.1 of the Omniverse USD Plugins the USD library was modified with prefixed library names to allow the Epic USD plugins to run together with the Omniverse plugins. Note that some export functionality (File : Export : .usd) may be impacted due to the registration order of UExporter extensions.
So be sure to have the official Epic games usd importer plugin active
I have the same error - over and over - it will not import any facial animations any more - even previously used ones that imported without issue! I’ve got the latest everything, inc the Epic Games Usd Importer active. Any ideas anyone as I am stuck for days now!!!