Well that is an old version of flasher! I used 3.5. (suspect you made a typo there)

Have you followed the Flashing Guide ?
It worked for me on WIndows 7 after a few attepts. Is the battery fully charged? Did you turn off the device and then press u and connect the cable?

I had the same error on my first try as the device driver would not load and i had to reboot win 7 to accept unsigned drivers. I doubt Linus has the same issue though.