Knife tool not working

[toymaker1]

I am trying to use the knife tool to cut part of a design drawn with the pencil tool. Whatever I try does not work. I have attached a screenshot, showing where I am trying to cut across layer 'Harness L-2 Clr, where the vertical line is. I thought it would be simple, but I cannot make it cut. Grateful for any advice.

Knife tool-1

[Kurt Gold]

The Knife tool cannot cut open (unfilled) paths. Is it an open path?

[toymaker1]

Thanks for your response. Sof far as I can tell, it is a closed path. I have attached 2 screenshots, showing the item to be cut. It has been filled with the Live Paint Bucket.Knife tool-2Knife tool-3

[Monika Gause]

Live paint groups need to be expanded before you can cu them.