I was finally successful at amending my federal and Indiana taxes using Turbotax Deluxe online. I was surprised it worked this time, because the notice again popped up about the ProSeries/Indiana needing to be released, but I just kept clicking continue, and the program finished the amendment process. The state tax forms, however, are not filed electronically and need to be mailed to Indiana Dept. of Revenue. Also, the amended form is not an IT-40X but is a regular form IT-40 with the amended box checked.
