You were lucky that you even got the computer to download and the support crew to respond to you. I have not been able to get the "red light" or any activity from the dive computer to the PC and my report of my experiences, complete with screen captures of the error messages, is not even acknowledged by support. I have installed the software on a Windows XP machine and a Windows Vista machine and tried to download 10 to 20 times each and the best I can get is "Waiting for Drak Interface."
Here is the report I sent Mares support (without the screen captures):
"After I installed the Drak software the installation program installed the USC Bridge. It reported that the Bridge was sucessfully installed. I followed the directions in the Drak manual for starting the connecting the interface and starting the program. The Drak light did not turn red, it stayed green, and I received the error message shown in Figure 1 below.
By reversing the order of running the software and plugging in the Drak interface and plugging in the Drak interface and running the software I can get an animated bar in a box that says, "Waiting for Drak interface" as shown in Figure 2 below.
I have tried the software and Drak on a Windows XP Home machine with 512 Mb of RAM and 30 Gb of free fixed disk space and on a Windows Vista Home Premium machine with 4 Gb of RAM and 500 Gb of free fixed disk space. I get the same error shown in Figure 1 on both machines."
On my Air it does not look like the Drak contacts are making contact with the Air contacts.
Perry