I had the same problem. To clarify: I bought 2 CD versions of Turbotax Deluxe for $40 each at Costco because Turbotax charged $45 to download a second state. Seemed like a $5 no-brainer to me.
Solution:
I simply called Turbotax customer support and explained my situation. You can locate their number by accessing the "help" while using Turbotax. The woman immediately sent/downloaded me the state I needed and I provided her the license code from the CD version that I had not used/loaded.
FYI- I asked if there was a way to simply enter the second license code to have the second state downloaded and she said "...no not at this time..." So for next year, if the costing remains the same, her recommendation was to call back and repeat the same process.
