New problem for Vectorworks 2019 with Mojave.
viewports with any rendtrworks basic options will not render. It will start to render and go through a quick preview, then it will be blank white.
Please help.
Did you migrate your settings? Check your default compression setting. I just went through this and figured out that if it is set to JPG the rendering turns white, but PNG works.
I had a discussion about it here: