There is no way to do a true elipse in ecabs. you may be able to create the geometry in cad and export to ecabs only I'm not sure it will machine. I'll take a try later.
An ellipse is technically a spline. Since eCabinets part editor does not support splines, you will have to create the appropriate size ellipse in another piece of cad/cam software such as AutoCad or Mastercam, and convert that spline to arcs. Once that is done, you can save it as a dxf and import it into the part editor. It will then work properly.
thanks for your help guys
i am a litle disapointed right now cause before i did start to work on eCabs i did a elipse on the CNC manualy and it worked great
good luck with the elipse. i had to make one months ago and all i remember is that it took me many hours of frustration... and in the end i think it was someone else on the forum that was able to convert my autcad elipse into something ecabs could use for me.