Boundary not in construction plane error?

Hi,

Mastercam X5
I can setup tool paths for flat surfaces, the curved surface and the holes I keep getting this "boundary does not lie in the construction plane" error. I can open up a cube with holes in it and I can setup tool paths fine for that, just not cylinders.
im useing pocket toolpath

Can anyone help with this error?

http://images.trademe.co.nz/photoser...16258_full.jpg

Thanks

The boundary that you are selecting is not laying flat, ( all points having tha same Z value )

Pre-set a Z plane value, drawing level, color for easier separation

For wireframe geometry
Try using Xform --> Project

For getting a boundary from surfaces
create the sufaces from solid faces --> run the Create_boundary.DLL c-hook ,