I just fired up Melodyne Essentials on a region and it suggested I upgrade to the free Melodyne 4.
I closed down Sonar, uninstalled the two programs that had Melodyne in their names, downloaded the update and installed it. When I then started Sonar, it hangs during the plugin scan on Melodyne vst3. There was no vst3 in the Melodyne 4 download, only vst2. So my Sonar is broken.
I'll post more once I figure out what has to be done to fix this. I'll start by reinstalling Melodyne 2 from my Cakewalk account.
Try 2 : Uninstalled M4, installed M2 and got a runtime error at some point during the installation but ignored and the installation finished. Started Sonar, the plugin scan completes, then Sonar hangs forever...
Try 3 : Tried to uninstall M2, uninstall fails on "Melodyne singletrack"... rebooted, same problem.
Try 4 : Hoovered the registry of everything Celomony or Melodyne (gods I hate doing that but it wasn't anywhere near as bad as GR4), removed all files and folders I could find, rebooted and Melodyne singletrack is gone from Programs and Features list. Now Sonar launches ok, but of course Melodyne is absent from the Region FX list. Not sure I want to try and reinstall, but what choice do I have...
Try 5 : Figured, what the heck, might as well try to reinstall M2 through CCC. I start CCC and get a 'new CCC version available' message. Accept the update and the installation of the new CCC fails. I exit that, click my CCC icon, and that fails...
[here goes my evening]
Try 6 : Uninstalled CCC 1.1.2.2, installed CCC 1.1.3.1 - that works but Melodyne Essential still shows a green light.
Reinstall ME2 through CCC. Sonar loads, Melodyne shows up in the Region FX. I define a region, Melodyne askes to be activated, I give it my serial number and that fails on a "licenceProduct/VersionNotAcceptableByClient"
Try 7 : Close Sonar, reinstall M4 without first uninstalling M2. That goes through, Sonars starts, I define a region, activate Melodyne and now Melodyne is all in French (I was never offered a choice and it was in English before, as is all my music software).
TRY 8 : Preferences in Melodyne Region FX menus has no languages option. However, after some surfing I discover that the vst plugin does and I could change it to English. I then closed and reopened the Region FX and it's now in English as well.
The moral of this story : Save yourself a lot of trouble and do not uninstall Melodyne Essentials 2 before updating to ME4.