Hi Jerry,
I guess this is no issue on our side because the airport and data are included in the ProSim dataset - I guess more a ProSim question. I have found a similar issue here in our forum - possible it helps you too …
I don´t have the ProSim addon, but it looks there is any “updater” which you must run first. The dataset has the VTBS included - so it must be something else, sorry.
Cheers,
Richard