I have a problem with PC Win10 64bit connection of my UT622C unit via supplied USB cable. It always show "Bus Error02" message on the UT622 screen. I have downloaded software from UNI website, have tried supplied CD, nothing work. When run Device Manager, there is a screen with LAN, USB and RS232 with UT622C + baud rate, but after I click "open LCR" it cycles on synchronizing...and nothing happened. Any ideas what is wrong? Charging battery via the same USB cable is working. Thank you.