Im having a problem with the calendar survey option.

I have it set so users can tell when they visisted an attraction. However, no matter the settings i keep getting the validation messages.

http://awesomescreenshot.com/0764xtdf3e

If i leave it blank it allows me to move to the next page. But if i click the next button a second time the message changes to this.

http://awesomescreenshot.com/0814xtdpa6

I thought it might be a jquery or bootstrap issue so I've tested with both on and off.

Also, i get no errors in firebug console.

Any help would be appriciated.