Hi, I purchased the upgrade from the 2015 version to 2021. I have many issues with the upgrade including continuing crushes. I recently purchased the positive grid spark amp. Music maker will not record using the USB input from the spark amp which is very disappointing. I tried to change all available inputs and audio devices to no avail. Had no issues using the Studio one 5 DAW. I know I am a few days after the 30 days return policy and asking for your advice.