WaveLab Elements 8 doesn’t start when Cubase is running.
It says: “Application has caused the following error: An important service has become unresponsive”.
When I had a trial versions of WaveLab 8 and 8.5 everything was fine and both application ran at the same time.
Windows 10 Home 64-bit
Cubase Pro 8.5.0 64-bit
WaveLab Elements 8.0.4
Though this problem was present on a Windows 8.1 machine with Cubase 7/7.5/8 as well.