I ran as administrator. I did re-set and re-scan of Vsts. I received an email from Melodyne today that advised to reinstall Melodyne in 64 bit. and to make sure the path was correct. I did that, reinstalling Melodyne in 64 bit only. The only thing that I didn't do is disable my virus scanner before install. I am going to do that now. I've tried everything that I know of.

I ran as administrator, re-installed Melodyne with virus scanner disabled. I rescanned VST and reset. The only thing I do not understand is in the folder C:program files/common files/vst3/celemony/melodyne is Melodyne.vst3. I am not seeing the Melodyne singletrack.exe and MelodyneReWireDevice.dll is in the VST2folder. I have created a path to both folders. On the VST settings screen where it states VST3 migration, the boxes that say "Replace VST2 plug-ins When Opening a Project" is checked. The other "Hide Related VST2 Plug ins" is not. I have a scan path to C:\Prog Files\common files\vst2 and vst3 as well as C:\Program files\cakewalk\vstplugins and C:\program files\cakewalk\sonarx1 studio. By the way some of my plug ins from my previous version of X1Studio are not working when I open a project created in X1. But my main concern is Melodyne. I am more angry that I can not figure it out. Thank you for all your help, but I'm still stuck. FYI am only able to open the 32 bit stand alone. The 64 will not open. I get a message stating "The application was unable to start correctly(0xc000007b). Click ok to close application.

paulclaro
 The only thing I do not understand is in the folder C:program files/common files/vst3/celemony/melodyne is Melodyne.vst3.

This is the binary for the VST3 plug-in. If it were a VST2 it would be named Melodyne.dll but VST3 plug-ins use the .vst3 extension.
 

paulclaro
I am not seeing the Melodyne singletrack.exe and MelodyneReWireDevice.dll is in the VST2folder. I have created a path to both folders. 

This is correct. In a 64bit installation, these files should only exist in "C:\Program Files\Celemony\Melodyne Singletrack". They have nothing to do with VST2 and should not be in the VST scan path.
 
 

paulclaro
 I have a scan path to C:\Prog Files\common files\vst2 and vst3 as well as C:\Program files\cakewalk\vstplugins
and C:\program files\cakewalk\sonarx1 studio.

Not sure about this scan path. Is "C:\Prog Files" really "C:\Program Files" or did you create a "C:\Prog Files"? The VST3 specification requires 64bit VST3 plug-ins be installed under the "C:\Program Files\Common Files\VST3" directory. What is in "C:\Prog Files\common files\vst2"? Adding "C:\program files\cakewalk\sonarx1 studio" to the VST scan path is not a good idea. The files in this folder have nothing to do with VST plug-ins.
 

 "C:\Prog Files" really "C:\Program Files"=Yes.
"What is in "C:\Prog Files\common files\vst2"?"= Celemony\Melodyne\ then there is a Celemony folder which includes Melodyne Singletrack\Melodyne singletrac.exe and melodyneReWireDevice.dll and a Registration and Activation pdf. When I do a VST scan I briefly see Melodyne pop up.

Don't scan the "C:\Program Files\Celemony" directory, there is nothing in there for the VST scanner.
 
Try running the standalone "C:\Program Files\Celemony\Melodyne singletrack\Melodyne singletrack.exe".

I removed the scan path C:\Program Files\Celemony". The stand alone in the location that you advised is not opening. I am getting error "the application was unable to start correctly (0xc000007b). the 32 bit version stand alone opens.
 

Believe or not, this is progress.
 
I have read this error is almost always a MS C++ redistribution library problem. Download the latest library from Microsoft.

will do that now. these are the options for download. do I download them all??
VSU_4\vcredist_x64.exe6.9 MBVSU_4\vcredist_x86.exe6.3 MBVSU4\vcredist_arm.exe

Did the update. Should I uninstall and reinstall Melodyne?

You won't need the arm processor version and the x86 is not causing a problem. You may want to removed both Melodyne and SONAR, clean up the registry and re-run the entire process again. The Melodyne installer should launch directly from the the X3 installer.