Get your taxes done using TurboTax

Wow daycd, what a nightmare.  Since you've already worked with TTAX support you might have already tried this suggestion, but if you're using a Windows based PC then have you tried using Windows System Restore to regress to an earlier restore point and then re-installing?  The problem you've relayed sure sounds like something got corrupted on the particular computer you're using.   I'm also a long term TTAX user (like back to the mid 1990's, well before eFile and laser printers -- back to the days of filing using the 1040-PC paper format).  I don't know that I'd go so far as to conclude they've "blown up the product" without more information.  Are you using a Window PC, a Max?  Were you installing from CD or download?    Did TTAX support explain what "Error code: 630" means? Is your PC's operating system up to date?