I am having the same issue! I have a Mac running the latest version of Catalina. Installed the programs from a disc. Was working just FINE and I was nearly complete with my return after spending a few days on it. All of a sudden, new update with TurboTax and NOTHING. It doesn’t open anymore. I spent 2 hours with tech support trying to trouble shoot it and they could never figure it out. Are you kidding me TurboTax? Fix your program or we will never buy from you again!
