I have the latest version of Kies, OS X, and a Samsung Galaxy s2 with CM10 on it. It is set to MTP with USB debugging off (if it's on USB storage rather than MTP, Kies crashes). I tried playing with many parameters but none of them seem to work - when I plug in my Galaxy, Kies shows "connecting" and nothing happens.. (the program itself is not stuck).
Someone suggested launching phone util (7284) and changing the PDA/modem stuff, but it doesn't launch on my phone, I guess it's because of my CM10.
I also tried rebooting the phone/Mac several times.
What else can I do?