I also had this problem when trying to complete taxes for the initial (extended) deadline in July(?). At the time I though it was because their site was swamped, so I filed for an extension and hastily (over) paid estimated amounts for federal and states.
I returned to TT a few days ago to find exactly the same problem at the same point in my return. I was able to navigate to other areas of the return, but not complete the Income section, it just hangs.
After 2hrs on with "support" I was able to get my issue escalated to someone with a clue. Seems this is a known bug, no fix, but they did give me a free code for the download version of the software and with that I was able to complete my return and file.
Folks, if you have this issue, don't waste time with tier-1 support, they cannot help you. Ask for a supervisor immediately and get them to search their "known defects" log. Get the download. Don't "try different browsers
I'm in web app development and I know this type of error, it's server-side (don't buy any BS from support about your connection or browser) and related to something specific in our returns that is unexpected. I had duplicate investment info imported (from my wife's and my separate investment accounts that have a joint account), I suspect that was the cause.
