Here were (are?) It at the game a manufacturing defect. On the CD there is only one Windows Installer, but not for Mac OS X! In the forum of producers site which is also discussed since the beginning of December last year. I have bought the game in late January at Amazon and also received such a disc without a Mac OS X Installer. The support says to write an email, specify the photo package and purchase information and then receives eventually a replacement CD. Can Judging by the forum entries on the page but that before last NEN month.
The game itself is very well (it did on my Windows computer try) and highly recommended.