I got this error last night, several times. I uploaded few PDMG liveries last week (Westjet old, Westjet Disney) and since those uploads I encounterred the Pin Error problem. FMC works great till the point when I try to enter Approach. I get the error after pressing DEP/ARR ARR-> Pin Error.
What would be the next step? Uninstall liveries and reinstall PDMG?