John
I just got the email from Celemony and did the upgrade to 4. It was painless. I did need to uninstall the older version before I installed the new version. 

have you seen the other threads...IOW opened a project with an older version and tried to play it?  Seems Studio4 is giving some fits to people that had Editor2 in some projects.  I hope this isn't a common situation.
 
Edit  to add...
I'm doubting people uninstalled Editor 2, as apparently newer versions override older.  Maybe that's the "reason"??(because they didn't uninstall first??)

I don't know Mixmkr. I have very limited experience with Melodyne. I did create a project to test it and it opened thats as far as I went. I have not gone to Editor or Studio. I just wanted to confirm that it had installed and was there. 
 
As for the uninstall that was mentioned in the email. Usually there are good reasons to follow that advice.  

John Usually there are good reasons to follow that advice.  

you make it sound like guys should pull into gas stations to ask for directions when they're lost.. :-)

mixmkr

John Usually there are good reasons to follow that advice.  

you make it sound like guys should pull into gas stations to ask for directions when they're lost.. :-)

Now that was funny! 

For some reason after the upgrade to 4 I have 2 issues. The editor opens and immediately closes when creating an FX region. Also, my previous projects that used version 2 will not open. Has anyone else had this problem?

Are you sure it is not open in the Multidock window?
 
My Melodyne 2 projects opened but I got a warning that if I saved them (using Melodyne 4) I could no longer open them using Melodyne 2.

I'll look again to see if it's in the multi-dock window. As for the projects previously done with 2, opening them for the first time after the upgrade is not working. If it works for you, my issue must be unique. Maybe I should just reinstall everything from the start. Thanks for your response.

Can you open Melodyne as a standalone program?
Some addons like VST mappers mess with the name of the external program called by Sonar.
If you can open Melo as a standalone, then Sonar is somehow screwing up calling it.
Check this
http://forum.cakewalk.com/FindPost/3357872
 
 

Microapp, your reply makes sense. There must be an xml file or some registry that is confusing the system. I'll read the link you posted. Thanks

I finally got a response from Celemony. The problem was I didn't have the latest X3 update.

This is Celemoy's response.

"Dear Remus,

thanks for sending the video.

I can reproduce this issue here on my machine, if I use an older version of Sonar X3. But with the latest release (Sonar X3e) I can use Melodyne in ARA mode without problems. Are you using this version or maybe an older one?

Best regards

Tom Bratka
Celemony Support"


Thanks to everyone that helped.
Remus