Split fails yet used point then curve OnCrv Osnap for cutter

Hi,
V5

I am splitting the purple line, I use Osnap Ctrl held down OnCrv and select purple line, I then add the point.

run split comand
fails
message says…
Split failed, objects may not be within tolerance of one another.

do this and use a line (zig zag end) and still it fails.

zoom in and I cant see why.

surely with placement of cutter using Osnaps OnCrv that should be enough ?

hate it when 30 mins spent tackling fails.

Split fails objects not within range etc NUTS.3dm (27.6 KB)

:rage:

Steve

Hello- The purple curve is two curves, grouped.

-Pascal