NEXIQ interface won't connect to VMAC program

[Martin56]

I can't get the NEXIQ interface to connect to the VMAC program. When I connect the nexiq 3 usb link via USB, the "device tester" shows that the interface is reading the module, but the VMAC software indicates that it is not connected. I have tried adjusting various settings on the interface, but when I disconnect it from the J1708, it stops reading the module and nothing happens.