well I think...
After swearing & crying & yelling for about an hour,
I switched to "attempt to make yafaray work" instead.
somehow, I just continiued swearing & crying & yelling after another external...
but after an hour of suicidal though, I finally made it work
(seriously, I was just like "omg.... it... it work.... what the hell did I do diferent this time ? nothing ??!?!? why it's working this time ??!?!?!!? what is this ?!?!?!)
anywho, it now work and it is damn CTRL+U - ed
so now, each time Il open blender, there will be this little
script at bottom right of my monitor asking me :
Do you want to kill the house and make an external render of it ?
...than I will surely say : OF COURSE ! L'ETS OWWN THEM ALL !!!
...seriously, I just can't figure out why it's working, but fiiinnnaaalllyyy, something is working today