Media driver is missing when installing Windows 8
I've been trying to install Windows 8 since the BootCamp software got updated to version 5. Unfortunately, it doesn't work. I always recieve a window saying "A media driver your computer needs is missing".
What I've already done is to try and load each driver that is located on the USB-stick and inside the Intel-folder. None of those seem to work. I've also tried the simple thing to place the USB-stick into another USB-port, which didn't help at all (some say it might help). Now I'm stuck. What else can I do?
The process worked just fine before the new Bootcamp 5 was released.
I have a Macbook Air (Mid 2012) 13" with 4GB internal memory and 120GB SSD. The USB is a Sandisk Cruiser 32GB.
MacBook Air, OS X Mountain Lion (10.8.3)