I just installed Take Command 17.00.53 x64 and now TCC no longer runs. Before installing TC 17 I had a copy of TC 16 installed and it ran perfectly. After the TC 17 installation TCC just won't run in either version. I've uninstalled both versions and reinstalled just TC 17. No luck. I tried installing just the 32-bit version of TC 17. No luck. When I try to open TCC directly from the installation directory I see a brief flash of a command window and then it vanishes. The OS is Windows 8.1 x 64 and is fully patched. Edit: I completely uninstalled TC, deleted the AppData folders for all versions of TC and rebooted. Now, with no additional tabs defined, TC opens briefly and then closes. Any ideas?