Lack of compatibility
Since the latest OS upgrades, the application became disable to run. I couldn’t find the way to upgrade it, so it will run in my OS 10.12.2; even though It says that it is compatyble with OS X 10.6 or later. NOT TRUE!
FredVigo about Tai Chi Workout - Martial Arts Exercises For Health, Fitness and Relaxation At Home, v1.0