Get your taxes done using TurboTax

I've made more adjustments that seem to work. I opened my flash drive and selected my tax file "....3B".  Then I opened my  TT tax program. Today it brought up this most recent copy without my doing anything else. I entered more data in the program. But the file would not save; TT message said it was locked. I then renamed the file as "....3C" (in the flash flash drive). I was then able to save the file as "....3C"!