Other stuff:
1) If on a Windows computer...make sure any waiting or partially-installed OS updates are completed. Those are known to block proper TTX installation. Re-boot in any case, even if none are waiting.
2) When you start TTX try rt-clicking on the TTX icon and select "Run as Administrator"...sometimes that helps.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
