Hi there. I dont know what I did, but I saved my a couple days ago, and all was fine. Opened it now, and cannot see anything in the top view. I see all of my info in the other 3 viewports, but the linework will not show up in Top. I tried zoom extents, and shows me the grid with nothing on it. When I try to draw a new line in the top view, it shows me a prohibition symbol (red circle with a slash it) and will not let me do anything.
Thank you so much for replying. I tried that and it still did not work. I can highlight the linework even in the other views, and I see the gumball in the top view, but I see nothing else in the top. Now it will let me draw in the Top, but the line instantly vanishes once I draw it…
Hello - in the Top view what does Properties (nothing selected) show for the camera location and target after a Zoom Extents? As Mitch suggested it might be a corrupted viewport - you can try closing it (in the viewport menu) then running 4View to make a new Top view.
Thanks for the responses. I got it resolved! The refreshing the viewport did not work, but Zoom Extents did only when I tried it in the working viewports. I discovered some accidental line that went into infinity and must have been messing up the camera abilities for the Top viewport. Once I deleted the mysterious line, it seemed to be working again.