Thanks for your feedback.
Please go to this default content install route to see if the human shader texture are exist.
You should see the folder struc like attached image.
If the texture already in that route, but you still encounter the lost texture issue.
Please uninstall the CC, and reinstall it via Reallusion Hub.
Also, please uncheck this checkbox inside the settings of Reallusion Hub before you reinstall the CC.
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