Suddenly won’t open anymore!! ??

Until today I have not had one problem with this game since I downloaded it way back when it first came out….but now for some reason, it won’t launch no matter what I do. When I click on the icon, sometimes it bounces for a few seconds in the dock, sometimes it does nothing at all. Either way it never launches :( I restarted my computer also but that didnt help at all. Please fix!!!! Maybe it needs an update - it hasn’t had one in over a year…..what can I do to fix this problem and once again use this app that I paid $40 for??

tmrose23 about The Sims™ 2: Super Collection