More info on this, as it can help to be solved.
The tool path is there, but no visible at first time. I need to pan several times (4 times) to my right. This is, the tool path is on the left side of the window so far away that it is hidden. Un zooming at start also does not help.
My parts begin at Z0 and end up normally at Z-60, so it should not be because the dimension of the parts/tool path. My tool path display is more tall than long, different than the standard one that is more long than tall. This is the only difference that I find comparing the two screens.