Shape Builder Tool keeps showing a line when cutting
Hi everyone,
Would be nice if someone could help me with the following:
I have two shapes in a logo, a white and a black one. The white one is a longer compared to the black one...
I want to cut the white shape with the Shape Builder Tool (shift+m). Example:

So the blue part is what I want to remove with Shift+M.
So far no problem, I just remove that part.
But then the problem comes up: there is a very small little black line still visible. Even when I save the CMYK-document (resolution of 300) as a JPG or PDF.
You can see the line in the figure above. I have to cut the part because otherwise you would see the white part on a transparant background.
Can someone help me?
