What packaging settings should I review to prevent Parsec error 6023?

In your project's Packaging settings (File -> Package Project -> Packaging Settings), ensure 'Use Shared PCHs' is enabled. Experiment with different packaging configurations (Development, Shipping, etc.) to see if one works better. Also, check the 'Additional Packaging Options' for any conflicting settings. Consider disabling 'Include Editor Content' if it's not needed for the final build.