Create a preset in GASE4. Save it. Now try to load it. Media bay will refuse to scan it. Ensure the folder is actually added in mediabay. Do quick scan. Do scan disk. Do refresh views. Close and restart cubase about a hundred times. Unload and reload GASE4 about a thousand times. Verify that the .vstpreset file really did get created. Try to drag-and-drop the .vstpreset file into Cubase or GASE4 (it won’t work).
Cubase 9, Windows 10.