I haven't tried flashing it on an actual PC, but I have tried on a Mac running bootcamp. I don't get any driver errors.

Rainisto, my device is under warrenty. The problem is that because I live in the US, I don't think Nokia Care here is going to fix it. I'd be happy to pay to get it fixed, but I don't know where I'd send it...

I DON'T get the "raw data transfer failed" message every time, however. Only sometimes. Other times, it just tells me that flashing failed due to an error.