Recently had to reinstall P3D v4.5. When I try and load a flight in the PMDG FMC - ref airport - I get the message - “Not in data base.” I get the same error message when trying to the load a flight using FROM and TO. I use simbrief for flight plans and have tried several flight plans with the same results. I use ActiveSky P3D and it indicates that their program and P3D have connected. I’ve updated the Navigraph FMC Data Manager. Currently running AIRAC-2103.