been busting my nut for hours here trying to figure this out.
I deleted WordPress and started afresh and even created another new app on Facebook but still the issue remains.
I have set up a Facebook app which points to my WordPress site.
all parts of the site work except I cannot click the register or login buttons.
If i log in from outside Facebook and refresh the Facebook app/page then i appear logged in and can do what I want, including log out.
any ideas please? I've spent hours and hours trying to figure this out now, and unfortunately most google searches think I am talking about 3rd parts Facebook connect plugins, which I'm not.