I've been using the ADAU1701 processor in a couple different setups, all are based on the FreeDSP layout. I have recently been getting intermittent (say 90% of the time) "Comm Error" messages when I upload my firmware. At first I thought this was due to windows 8. But then i was able to get a string of successful downloads. I can't pin it down to any certain order of operations, and my USB devices says the USBi is working Okay.
Could this be the USBi device hardware? Or is this a hiccup with the Windows 8 incompatibility? I would try on a win 7 machine but the HD died on that and I've already invested in a windows 8 machine.