I good suggestion, but unfortunately it doesn't fix my problem. I go through the 'Program Compatibility Troubleshooter' and end up with a report that says: Issue found: Incompatible Program. When I loaded the TT Business (Schedule C) software on the 26th of January, I when through the complete install and update process, began a return, and saved. I then quit, and reopened from scratch, with no problems encountered. Now, the same program goes out for updates, downloads, and then fails on the install ... exactly the same thing that happens with TT Business (Partnership/Trust) install. So there's either a problem with 11 Win 8.1 updates that have occurred between the 26th of January and today, or something common in the TT updates that Win 8.1 doesn't accept. I've removed six of those updates (the remaining 5 are security updates that I can't seem to remove), but that doesn't change anything for either program. I guess it's time to try a phone call.
