[Plugin: All-in-One Event Calendar] Calendar unresponsive after update to 1.4

First I have to say I absolutely loved this calendar when I first found it (version 1.3), as it did everything my organisation needed and more. However, after updating the calendar to the 1.4 version, it no longer seems to work properly.

The calendar is visible as is the widget, however the hover-expansion of events no longer works and I cannot change the month or view on the calendar. http://signdisability.org.uk/calendar/

Also, I can’t add new events properly either. All the drop-down boxes and auto-fill boxes (i.e. the google maps), no longer work properly, this is also visible on the event’s page as the map is no longer visible http://signdisability.org.uk/ai1ec_event/nas-planning-for-the-future-wills-and-trusts-seminar/?instance_id=23 . I have tried to manually input the information but it after saving it isn’t showing up.
Any ideas on how to fix these issues or is it going to be just a case of going back to a previous version?

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