I’m just getting started with Padshop; am using it on a Windows PC with Reaper not Cubase, so don’t know if this will help, but I found that the preset is actually saved by the DAW, not Padshop. So in Reaper, after creating a track with Padshop Pro as the instrument for the track, I just click on Reaper’s “Presets” dropdown, and the preset I had saved appears there. Hope this helps!