Can't scroll through months

Hi all, sorry to open again this td.

I try to change the months but the plugin remain in wait (a circle in the screen) indefinetely

Theme Customizr 3.1.24
chrome 37.0.2062.120
IE 9

In administration mode the plug-in works fine.

Do you have any suggestions ?
Thanks
Mizi

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