OK 2 things spring to mind: Is the main "!DAZ" folder under the Library folder, not somewhere else? Also this should be in your main runtime installation if you're running P5, not linked from P4. Have you installed and run the V3 service release, and if you've moved folders, again copied the !DAZ folder across?

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"you are terrifying
and strange and beautiful
something not everyone knows how to love." - Warsan Shire