Hello, I appear to be having the same problem.
I’m new to WordPress although not new to website editing, however I’m hoping for a bit of a straight forward solution please (if possible).
I’m using the All-In-One Event Calendar, WordPress v.3.3.1 and Chrome on a Windows 7 PC. The plugin installs fine and I can view a calendar on a fresh page. However, I am unable to add an event because there is a glitch with the date function. When I try to input the date, no date menu comes up. I can input a date manually, such as ’02/02/2012′, and save the event. However it still doesn’t post it and when I check back it just says a number followed by ‘ef’. So basically where the date should be ’02/02/2012′ is says ’11ef’. It will not allow me to change it so I just have a blank calendar – totally useless. I’ve tried it in Safari – same problem. I’ve tried changing the date format to US or other – same problem. Any help much appreciated ??