Worked
Thanks very much

Hi,
Had to do a clean install of Windows 10, and now the registration process fails.
Load CMR, says it is unregisterd, select register, completes successfully, reload CMR, says it is not registered, endless loop

Already done that three times.

Downloaded the usb 2.5 drivers from your link, but can only test tomorrow, but I see the digital signature date is the same as I have previously used. (22 October 2015)

Device manager reports the following for the I2

Windows cannot verify the digital signature for the drivers required for this device. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source ...

Data Viewer still hangs on "Searching for a connected tool" (3.3.0.16)
uninstalled / reinstalled same problem
Win 10 sees the I2 without and problems