A friend of mine from the Netherlands upgraded to LR 4.x but is haivng touble tethering to his older Canon 1D Mk"something".
He's determined that it will work with 3.6. He has legit serial number for 3.6 w/ Mac OS. Unfortunately, he didn't keep his original 3.x download.
I'm a PC guy so can't help him.
Anyone still have the full download for 3.6? If so, and you're willing to help, I can PM you the upload link to my server.
I don't think we're running afowl of any legalities here, but if someone in the know, knows better, let me know and I'll delete this post.