Rehabman,
thnx.
It's not a question about if i listen or not!? I don't have knowledge enough yet to install clover without issues. So, until then, i want to use chameleon. I'm reading, researching and i thank you for the links. But, in the process i have made some mistakes and i don't want to do another yosemite clean installation... for now! I have fixed Mavericks disk and it is working well, but i got this persistant error with yosemite... can you guide me and say something about what i ask above? It is something related with that kext? thnx again.