X-Plane not running because of wrong format

I tried to update the new airac 2205 to my Zibo fms but to my horror x-plane gives me a message and it wont run at all. so my sim will not stat up,

“Loading navigational data failed:
Wrong or old file format, 1100or1101 Version is required for
C:\X-Plane11/Custom data/earth_fix.dat but it read 600
Version-AIRAC Cycle 2205 Rev. 1, parsed on 20220511,Data
provided by Navigraph-www.navigraph.com-sourse data
copyright (c) 2022 Jeppenson-This data may be used for
ground based recreational computer game simulation”

After reading this message i pressed the "understood blue tab but X-plane refuses to start up.

please can someone help as i cannot use the sim at all. thanks Bryan Reed

Hi Bryan,

Welcome

You may have copied navdata to the wrong location. I suggest

Make sure X-Plane is not running.

Run … your X-Plane 11\X-Plane 11 Installer.exe with Update X-Plane option to check installed files and restore file structure.

In FMS Data Manager, check you are running latest Version 1.8.9.0421 . If not please download and install FMS Data Manager.

In FMS Data Manager Settings, check your X-Plane 11 path is correct, by navigating to X-Plane.exe.

In Addon Mappings, delete entry X-Plane 11 (11.50+).

Press Scan. Are you now seeing entry X-Plane 11 (11.50+) ?

If yes, in Addon List please select X-Plane 11 (11.50+) and Update.

Cheers
Ian

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