I can draw a polyline in the front view, top view, and left view. I can’t draw a polyline in Perspective view. I tried 4 view several times, and it dosent fix it.
Hi @Sid_Stevens
It’s hard to tell without a more detailed description, but my initial guess is that you are trying to draw “outside” (more likely above or below) the active construction plane. If you take a new, completely empty file and try to draw a polyline close to 0,0,0 - does that work? If you are looking to draw on other construction planes than the top (which is the default construction plane for the perspective viewport) you can try the OneView command, which will switch construction plane as you rotate the view closer to either of the orthographic views (top, left, front etc.).
If this is not the solution, it might be a video driver issue, but there’s no way of knowing without a more detailed description: What does the command prompt say when you try to draw a polyline in the persp. viewport? Is it a problem in all files, eg. an empty file with no other geometry? Also, please run the command SystemInfo in Rhino and post the resulting text here. That can help people get an idea of what might be wrong.
HTH, Jakob