I’ve found a work-around. If I unplug the web cam and launch N6.5, it opens up normally. Then I plug in the web cam and launch it inside of Nuendo. It works and I don’t have that video engine crash when I start a session. It’s rather annoying to have to do that. But I’ve lost count of all the work-arounds required to work with DAW/Computer recording. So, unless an actual solution shows up, I guess this is how it will have to work,
I did reach out to the VST SC Forum to see if they had any ideas on how to fix this. But, so far, no replies. In any case, thanks to those of you who offered help.