VOCALOID4 Editor for Cubase
(1) Have you used the Cubase function for editing shortcut keys (Go to "File" menu, and then "Key Commands")?
If shortcut keys are customized in Cubase, the shortcut keys in VOCALOID4 Editor might not operate correctly.
(2) Are you using a virtual keyboard?
The shortcut keys do not take effect with a virtual keyboard.
If you are unable to find a solution in the Troubleshooting section, please use the Inquiry Form to submit an inquiry.