PNG files rendering from DRC bot ?

Hi,

DRC bot is causing me some troubles… The email says that there is no problem with the design, but the png files does not show the copper layers as they should be.

Here is the top layer of my PCB, (screen caption from Viewmate), look at the octogonals pads in the high part of the PCB :

http://poildegris.free.fr/Imgbase/batch … ewmate.jpg

And this is what I have from DRC BOT :

http://poildegris.free.fr/Imgbase/batch … RCBOT1.png

The octogonals pads have dissapear, and three big horizontal tracks are shorting everything…

Does anyone have already seen this ? Is the png file from DRC bot supposed to show exactly what you will get as final printed circuit ?