It’s quite a coincidence that I had the same findings this morning. I started the flightsim and I had blank displays + FMC’s again. So I did that runway reloading trick again, I had the displays back on but any airport ICAO I typed into the FMC was returned with Not in database. I quit the sim, uninstalled Navigraph data and restarted. This time I noticed the navdata version in the FMC is an empty field. So I reinstalled the RJ, deleted the WASM folder in app, I didn’t install the Navigraph data and since then no problems with displays or Not in database error.
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