[KCJ]

Yes, I continue to be able to connect to the HBS86H drives by selecting one of the higher COM ports in the ProTuner combobox. The exact port that works is variable, so I just try them all in order until I find the one that works. It's a pain, but I haven't found an alternative solution.

Sometimes on the first run thru non of COM ports will work, but unplugging the USB and powering down the drive and then connecting again seems to resolve that most of the time.

For the record I am using Win7.

[freemoore]

OK, so what happens when you try to connect to the wrong COM port? I've been through every number (1-10) and numbers 1 and 2 give me the 'communication fail!..' error, whereas all other com port numbers give me 'COM error'.

Can you tell me which version of ProTuner you're using, or post a download link for your working version?
Thank you for your answer!