This CA state program download/install/looping issue appears to be a recently developed issue with Mac users and the CA state download. There are at least a couple of other threads where 6-7 Mac users have reported trying to download CA state program and are having that problem. I've reported it to TurboTax and have not heard anything back yet.
Please phone TurboTax Support and ask them to push you the state software download. Another user reported back that it worked perfectly once Support provided them the software by that method.
You can use the form at the link below to schedule a call back, or it may provide a number. Hours are 5AM-5PM Pacific (8AM-8PM Eastern) Monday-Friday.
Where the form asks what product you are using, be sure in the dropdown menu to indicate "CD/download" and the proper operating system, then indicate which Edition.
https://support.turbotax.intuit.com/contact
