How can I eliminate white outlines?

Hi all,
I have an issue when cutting regions.
If I select two regions overlay them partially and select "cut sections" (sorry I am using the German version so I don't know the exact name of the option in the english version).
As a result the lower region is cut along the border of the overlaying region as desired.
However even though both inital regions do not have an outside line and the line width is set to 0 ther still appears a white outline along the edges of the region. This line can be clearly seen when I overlay another region with the cut out. :-/

The same effect happens when I export a region with no outine as png or jpg.
I want to make a wrap around background but the border can always be seen as this anoying white line.

Can anyone help?

Many thx
Olaf

Make sure that the cuts are on a FULL PIXEL. So change the units to pixels (if they aren't already) and ensure all the dimensions are to full pixels.

A simple fix might be to set up a small amount of Feathering and adjust the Feather Profile to hide the white line.

Acorn