Question

when i purchased artist version of presonus studio one 4 i installed it on the mac installer and clicked replace for the option of replace or keep both it says on the information to copy the product key but there is nothing to copy it to and i cant find sampler one or anything in the instruments

Answer 1

I think you're still working in de demo or Prime version. You have to activate your Artist version first.

Look in de menu for "Studio One activation..."