Acronis True Image 2017 Won't Start - Nothing in Event Logs

Hi - I've had Acronis True Image 2017 running on a stand-alone workstation without issue for over 3 years. When I went to change the backup drive today, I noticed that there had not been a backup in 5 weeks! When I tried to open the program, nothing happened. No error, nothing in the event log, nothing. I restarted the computer, nothing. I restarted the Acronis services, nothing. I ran a repair install, it completed, when I went to launch the program, nothing. This workstation is not connected to the internet so there is no anti-virus. It runs Windows 7 64-bit, no windows updates run. When I changed the drive 5 weeks ago, I opened the program normally and made sure it saw the new drive like I always do and it was fine. Any ideas? Thank you, in advance, for your help.
Acronis Links : Acronis Scheduler Manager : Acronis VSS Doctor : Backup Archive Compatibility : Cleanup Tool (All versions) : Cloning Disks : Contact Acronis Support : Difference between Backup and Disk Clone : Repair program / settings
MVP Assistant (Log Viewer) latest version see pinned topic in ACPHO forum page.
MVP Custom PE Builder available from Community Tools page.
Acronis True Image User Guides available from Product Documentation page.
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