I use a Nektar LX88 controller that has integration with Cubase 9.5. I exported a .wav file from Cubase to Wavelab Elements 9.5. WE opened and looked good, until I tried to start playback and WE crashed.
I should have realised in advanced that WE didn’t have integration with the Nektar, but I didn’t. So just in case you have a similar experience, turn off the Nektar before starting WE. Doing this seems (!) to have solved the issue.
Hope that helps someone.