I have bought and installed Finale V26 (W10) with ARIA Player v1.959 (which is called the latest version by Player UPDATE button). But Garritan won't find any instrument although there are actually there. The error message tells me the path where it is and in the same time can't be found!

Is there a chance to a normal music teacher who cannot afford 12 hours a week to deal with garritan community to get this software running?