I've read through many of the previous posts. I'm in a similar situation--bought the CD version and used it to install TT on my Windows PC. Now I want to download on a Mac without an internal CD drive. Got the error message about the license code already being associated with an account. Just called TT and was told I can't use the CD and the download! Rep said I have to choose--so since I used the CD already I'm stuck using that on other computers. And she also said I could connect an external CD drive to the Mac and install from the CD onto my Mac. Is this really true? Thanks.
