I have the exact same issue of forms being not ready with the exact same version 2019.41.11.194 for turbotax 2019 home&biz and that manual update downloaded gave me the exact same error of turbotax 2019 not installed.
I tried reinstalling turbotax 2019 home&biz but still getting all the same errors. Turbotax please do your due diligence for the product you sold to which we paid money.
