[chirp_users] Icom 2730A

I have been having trouble with getting my 2730 to accept an upload to the radio from CHIRP. I can download just fine, but when uploading back to the radio it hangs, and does a full reset of the radio. I am using a MacBook Air running 10.14.6 . I have tried several different daily builds of CHIRP with no luck. Any ideas? By the way, everything works when I use PC running Windows 10.