I don’t know what happened to my drawing. I rendered using Light up and when I finished the drawing disappears. zoom extends does not work.
It disappears in SketchUp or in LightUp?
It would help if you share the .skp file.
What graphics card? Your computer must have one.
LightUp shouldn’t be changing the model at all. It’s possible you’re still in the LightUp view, choosing any SketchUp tool should take you out of that mode.
Better contact @AdamB (Adam Billyard) from LightUp directly. He might be able to help you.
I had the same problem many years ago (2014) and we couldn’t figure it out back then.