When I click on the "Family Tree" tab and then the "Person" tab, I get an error message to refresh.

JECrow

When I click on the "Family Tree" tab and then the "Person" tab, I get an error message to refresh.

Julia Szent-Györgyi

Have you tried the usual routine? (Try it in a different browser; if it works there, then clear your FS-related history [cache and cookies] in the original browser and try again.) In any case, I just tried Family Tree - Person and it brought up my own profile just fine.