Hello
I have used ViaCad 9.08, build 1180 (latest french version) for a few months.

I can not "finish" splines (interpolated or with control points) : I can draw them, but as soon as I try to end the spline (whether with Esc, double click or right click), the drawing just disappear.
Sometimes (maybe once every 10 or 20 times) it works...and then I can see, select and modify the spline
But most of the time nothing is left on the screen.
When it works, it can work for one spline, then not for the very next one...

I tried to check if it was a problem of color, but when I select the area, there is nothing inside

My PC is Dell Vostro with Windows 10 Pro 64 (French edition), I7 processor, 8GB RAM
Due to migration from HDD to SSD a few weeks ago, ViaCad was reinstalled, but problem stays the same

Can you help me ?

Thanks and regards
Alain

Hello Jason
Thanks for your fast answer

1. Is this spline drawn in 2d or 3d? , same plane? : 2D

2. How many pts are you trying? : Any, even 3 points do not work

3. Are you snaping to certain existing geometry?, what snaps do you have on? No, I create spline from empty file, but if I try to snap to existing geometry (like in the "draw goblet tutorial"), it does not work.
All snaps are on but 4 last ones (as I use french version, not sure about translation, but the ones off are "faces, plan, grid, plan only". I tried to remove all snaps, does not change.

4. Is there already existing 2d or 3d geometry in your file? : no, started from scratch

5. Can you create a sample file and try to draw a couple of splines and post it. : check here : https://1drv.ms/u/s!Am32YRTOiPhegcgHcVDkYM0-qLSQ0Q. Sorry, not sure how to post a file.
In this file, one spline is showing, I drew 2 more (elow the visible one) that are just not there.

Best regards
Alain