Sims 2 no longer opens on my mac
I bought the Sims 2 collection a few months ago and had no problems. I even played sims 2 last night. However, tonight when I try to open it it bounces in my bar as thought it is going to open and then disappears and does not open. I have no idea how to get it to work again. The only thing that has changed since yesterday is I updated my mac with one of the security updates. Could this be why? if so how do I make it allow my sims to work?
I am getting no error messages or anything, it just bounces then goes away.
MacBook Pro (13-inch Mid 2012), OS X Yosemite (10.10.5)