No I kept getting that as well.
I am not sure if moving the end of the first line and start of the curve has any impact.
Also I found I had to flatten the curve a bit as a full arc was giving an error and wouldn't allow the stair to be created.
Barry.
One of the forum moderators. Versions 6.5 to 27 i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10 Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11
Thanks for letting me know Barry, this is going to annoy the hell out of me!
I've checked the fill (drawn by ANOther) and changed it so that it should work for 250 treads i.e. the length of the lines for the stair path are multiples of 250mm and the fill corresponds with that.
Attached is the dialogue and image for when I go to create my stair.