Hello,
Last week I bought GSX Pro, installed it, and I'm having the same problem. Neither the tugs nor their drivers are visible. I've uninstalled and reinstalled GSX Pro three times, as administrator and without this option, and I still can't see the tugs. The baggage and cargo carts move around the airport without a vehicle. I've disabled all the add-ons in the Community folder and haven't started FSLTL, and I can't find a solution. Please help. Thank you.