My update that just pushed was for 1.13.17.0

[Jummivana]

Seeing this issue around, have you tried checking the Windows Store/Steam for another update?

Here is a thread related to it:

Last update, not let select airports or runways

Yep, that was the issue. For some reason the sim updated with a large 4.03GB update when I started it then I could not load a flight. A further 1GB update from the store was required then another near 1GB update when re-starting the sim to correct the problem. It seems to be ok now