[chirp_users] chirp and kenwood tmd-700a

hello group i am trying to program the memory channels of my kenwood tmd-700a. i can download from the radio.scroll down to the frequency i want to edit,left click to highlight the frequency,right click to edit.after editing a box comes up saying invalid value for this field radio refused 12. i have also tried suing the kenwood software mcp-700. the computer and radio will not communicate. i am using a windows 8 laptop to program the radio. the kenwood mcp-700 software will detect which comport that is in use,just will not talk.yes i am aware that the mcp-700 might not be totally compatable with winodows 8. thank you. Leonard