I just bought the same ipod 4 days ago and had same problem. I ran diagnostics and came up with same error. The IEEE 1394 host controller is just that it sees there is no firewire port, you don't need this anyway. I called apple, they said virus...which is crap cause it was on 2 computers that I had this problem.
It was suggested on here that I get a firewire port, but when I went into pc store to get one, the mac guy said that we can not use firewire ports to sync music, just charging. He suggested again that I replace USB 2.0 port. I told him mine was new and that it worked for other things, but he said sometimes some usb ports won't work for bigger things than printers and flashdrives. So I spent 20 dollars on a new usb 2.0 card and it fixed the problem. The reason it did not work on other pc is because it did not have a 2.0 even though it says it is only recommended that it be 2.0.
BTW, I also have an 80 gig that I bought on same day, and it did not work either, but both worked when I bought new usb card. Ignore the IEEE error, it's just letting you know you do not have a firewire card and you don't need it anyway.
Hope this helps, spent three days on phone with both stores I bought the pods from, apple, and 3 pc techs, and spent 14 hours (not kidding) on pc researching this issue and tried every troubleshooting tip on here and 3 other websites and nothing worked until I got the new port.