World of Goo game problem

Hey everyone, I am new to the forum so I am not sure how all this works. I have a question about a game that I bought last December. I bought the game World of Goo on a previous Mac that I had and played the game. I have everything on my computer backed up on Time Machine. A month ago my computer was stolen, but I was able to get a replacement. After I reinstalled everything on my new MAC, I was unable to get World of Goo to play. The OS on both of the computers are the same. I bought the game from a website called bigfishgames.

Does anyone have any suggestions on what to do to get the game to play on my new computer? Any help would be appreciated.