uClient does nothing on Mac

uArm Serial No.: (the No. at the bottom of each uArm reading “UARM-XXXXXXXXXX”)

Firmware Version: 2.2.1

Operation System: Mac 10.12.4

uArm Controlling Method: uClient 2/0

I downloaded the uClient 2.0 and when I open it I just get a blank grey window. I have java installed, processing works fine, Arduino works fine, uArmAssistant works,
uArmCreativeStudio works, but uClient just opens to a blank window.