Caledar is showing twice

Hey there,

For some reason I have this awesome calendar showing up twice on my website. It changed after I did the update and still don’t understand why this happens…

If anyone knows how to fix this problem, please send me a pm or reply on this post so I can send you the login information (because it’s a private website)

Cheers,
Dominic

http://wordpress.org/extend/plugins/all-in-one-event-calendar/