On my MSFS 747 and 787, I can't enter data into the FMC. This happens both with Simbrief flight plans and with MSFS high altitude airways. Using different airports doesn't help (same problem encountered for departure from Frankfurt, Jfk, Sfo, Egll). This also means I can't enter an ILS frequency, so automated landings are out. I have the Salty 747 mod installed in the Community folder, but deleting it makes no difference. Any ideas?