Unity 3D White Screen Error

Hello, I've been having a problem with my Unity 3D. Well... I Have made most of my Game on my Windows 7 PC, and all is running smooth on there. But i have upgraded to a Mac now, and i put all my Project Files onto a USB Stick to transfer them on to my Mac. But when all the Files are on my Mac, and imported into Unity, i get a White Screen. I Can't see anything, including the Inspector only the Options Bar at the top is Visible. I noticed that if i create a new Project on my Mac in Unity everything starts to work, so i thought that it was an Error in My Project, but if it's working on my Windows 7 Computer, it can't be? This is what i have Tried: Re-Install Unity 3D, Re-Import the Files into Unity, Gone to the 'Window' tab at the top, and Clicked 'Layouts' and tried all them Options, Tried to Create a new Terrain (thinking the Inspector would show up), Imported some Prefabs from the Asset Store (thinking the Inspector would show up).

Here is what it looks like: http://oi45.tinypic.com/mw2zgg.jpg

Edit: I Have noticed it's to do with the FPS Kit, because if i download that off the internet onto my Mac, the same thing happens again, and yes, i am using a few of the Features of the FPS Kit in my Project

I Hope i gave enough Information. Please Reply, Thanks. #Swifted Games