Just downloaded SDC ready for this weekend. Ran program for first time and when entering radio 1 cw port as 5 and control port as 4, I get "com port 4 [and 5] does not exist or is busy". I use a microHam digi-keyer set up which works fine with SD, SDI and SDV, as well as all the DXLab suite. Any ideas please? Graeme G6CSY