Did you install Cubasis afer GPO? If yes ,then it is most likely that the GPO installer didn\'t put the Personalorchestra.dll (maybe I go the name wrong) in Cubasis\' VST-plugins folder. But that can easily be corrected: Just navigate to the GPO installation directory, search the folders in it for the .dll and copy (not move!) it into Cubasis\' VST-plugins directory. Then restart Cubasis and it should work.