Being unable to hit the "Play" button in the launcher may be a permissions issue. Check your anti-virus settings and make sure the correct exceptions have been setup.
The application files that may require exceptions are:
Some antivirus programs require entire folders to be selected instead of a single file.When this is the case, the file paths below are what you should use. If required by the anti-virus program, include all subfolders since every file is critical to run the game.