Hi Chris ,
Looks as if latest AIRAC is installed.
As mentioned in FAQ - Nav Data Out Of Date :
I suspect the date/time used in the FS is outside the date range of the AIRAC.
Check your FMC and report the AIRAC number and dates using Posting Guide - Uploading Screenshots
If flying within the dates, make sure you are not starting with a FS situation or saved flight with date outside the AIRAC date range.
To be extra sure, set the FS to run in System Time. Also check your PC has the correct date/time set.
Cheers
Ian