I used the startup.ini from this thread: Wavelab Pro 9 Crashes Upon Startup - WaveLab - Steinberg Forums now. I can now open WaveLab 9 again. 
Lost my presets. 
Kept my plugins.
I used the startup.ini from this thread: Wavelab Pro 9 Crashes Upon Startup - WaveLab - Steinberg Forums now. I can now open WaveLab 9 again. Lost my presets. Kept my plugins.