I have a site with a Siebe GCM-86120. I have Tree Tech software, and what is supposedly the database, but it comes up blank when I open it. I am connected with a USB/DB9 converter with null modem cable. Nothing seems to talks and when I establish communications I get an error in one of the windows, "ERROR: No Equipment Segment in Database." Any help and insight would be greatly appreciated. Something in their system is cycling their cooling stages on/off very frequently and they want to try and keep their new compressors healthy.