I attemted to download data viewer for my new GMC-320. Tried both online and from disc. Keep getting message "com port 1 open failed. Get same message when I try other port numbers. Please keep all replies simple. I am from the slide rule era and have had no formal computer training. Thanks in advance.
thanks ZLM. The problem is definitely due to not having the driver installed. I have tried multiple times to download it from the internet site as well as from the disc. Each time I try a new download I first remove the previous attempt through "uninstall". After I click "auto detect" it cycles through all the com ports then says failed to connect.