'Edit Project' in Nuendo can't access. Any solution?

Hello, I recently Crossgraded to Nuendo from Cubase.

While using Cubase, I did not face this problem. Now when Nuendo exports are opened in Wavelab, it is not letting me to use the option ‘Edit Project’ as it blurred.

Can anyone help me? Should I delete Cubase or is there any way to reset preferences for Wavelab?