Zanatos, I did download from the BFL site. I didn't understand how to install it but I checked versions and it is the same version I have installed. Cgminer-2.10.5 is working fine so I don't understand why the new one is not working for me.
Read the readme THAT COMES WITH THE VERSION YOU HAVE.
It clearly says when you're starting that it needs a WinUSB driver, but you have the FTDI driver installed.