At this point you'll have to specify what version of WAMP you installed because WAMP will keep updating it's PHP version and Mysidia is now outdated in the world of PHP and will not run on the latest versions. This is going to be a real problem across the board at hosting companies in a few short years so I hope that Mysidia releases its next version soon.
Anyway, make sure you get WAMP with a PHP of 5.4, 5.6, or 5.8, and not PHP 7.