Cannot complete Task 24:Refer 1

Has anyone been able to complete this?

I assume it means invite someone to play the game through the management menu, but whenever I try to, by typing in an email address and clicking OK, I always get an error telling me to check my connection (i'm playing via wifi).

you could just send the person a normal email or tell the person to join the game and then put your username as the referer when they change there name until this bug is fixed

Ah, so it's not the act of inviting somebody that completes the task, it's getting them to put your name in when they sign up?

yes but you dont collect the rewards till they hit lvl 4

They have to put your user name as a referal in task 5, and then reach level 4 once they have reached level 4 the task will show up as complete, good luck

unfortunatly you will have to invite a buddy who as the game on iphone/itouch/ipad. there is no current option to enter a referrer from the windows phone 7 interface.