Every year I get this error! Each of the past 2 years, several months after filing my taxes I have wanted to open Turbo Tax to run some additional federal scenarios. Both years the software insists on "updating" and then produces the error 1310. Last year I went through a lot of extra work to reinstall TT. I might do it again to fix the problem again but I cannot believe that TT has not fixed this problem -- many people have error 1310! The only clue I will give is that I installed the software in an alternate location (D: drive instead of C: drive). I probably will use some other software next year. TT has failed me.
