Windows 8 Installation: "A media driver your computer needs is missing"

I need help. I'm using OS X 10.8.3 on late 2012 iMac and I've prepared everything using the Boot Camp Assistant (create bootable USB drive, download latest Windows support software, create partition).

Then computer was able to boot from the USB drive, then I see the Windows logo, but during the setup, after I selected language, time, and keyboard type, this message pops up: "A media driver your computer needs is missing" (see attachment).

I've tried booting again, using different USB ports, but to no help. Any idea what's going on? Heeeelp

wrldwzrd89 said:

Extract the Windows support files to a different USB drive. Tell Windows to look there when asked for the driver. Does that help?

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Which one is it?

wrldwzrd89 said:

I have no idea, but usually Windows will just auto-discover what it needs.

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Then which ones should I copy to another drive? Certainly not everything, right?

thesqudge said:

Did you ever fix the problem? I'm having a similar issue...

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Nope.

jenzjen said:

DL the bootcamp support software directly vs via the assistant; this resolved my similar issue.

http://support.apple.com/kb/DL1638

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Thanks, I'll try that.

Okay, I've tried it. Still no luck.

Okay I solved the problem by downloading a different copy of the iso from a different source. Oh... I'm so happy!

Anyway, I wonder how that worked because both iso's had the exact same name and size. But I'm not complaining.