I am also having this issue. The Splash window will come up and then "Not Responding". I ran some tests and thought to wait it out, waited 15 minutes and nothing. Forced closed, deleted trainer, and redownloaded trainer and it is the same thing. All of my other trainers are doing the same thing. I have tried the Framework 4.7 and it is the same issue.
Do you have webroot by any chance?