If you get a message that says Melodyne is not compatible with Studio One, but the normal plugin version of Melodyne (the one with the transfer button at the top of the Melodyne GUI) is running without any issues...

Here is a workaround to solve the problem:

- Shut down Studio One
- Delete the folder "Studio One 2" from Users/<your name>/Library/Preferences/PreSonus (Mac)
- or delete the folder "Studio One 2" from Computer/System/User/<computer name>/AppData/Roaming/PreSonus/Studio One 2 (Windows)
- Start Studio One again
- Try again to open Melodyne with CMD-M (Mac) or CTRL-M (Win) on an audio event