i installed some cplds succesfully,
i unplugged the cable and i plug again the same usb port and the other one, i had to install the drivers again and again.
and now, my cable is damaged i think,
i can see the cable in "device manager".
impact can connect to the cable.
But when i try to install CPLD, it warns me "firmware update". OK i did it, but still, it freezes when installing CPLD...
I've found that for some devices, it's best to reinstall drivers by using already installed drivers, instead of the original disk or directory. Instead of the default search, choose to select from a list of known device drivers. If you are able to successfully use one USB port, there ought to be one driver on the list that works.