Well... I do seem to have the problem so just to provide a Work around for anyone else who might stumple into this issue:
1. In the Cakewalk Plug-in Manager x64 click Options under VST Configuration
2. Uncheck Re-scan existing plug-ins
3. Go to the VST installation folder of the UVI Workstation VST
4. Rename "UVIWorkstationVSTx64.dll" to "UVIWorkstationVSTx64.dll.old"
5. Back in Cakewalk Plug-in Manager x64 click Scan VST Plug-ins
6. Wait until Scan is completed
7. Rename "UVIWorkstationVSTx64.dll.old" back to "UVIWorkstationVSTx64.dll"
8. Back in Cakewalk Plug-in Manager x64 click Scan VST Plug-ins
9. Wait until Scan is completed
Now both UVI Workstation and Melodyne Essential are registered and Work along side each other
Sincerely,
Dennis