I updated today one of our EE installation from 2.6.1 to 2.7.2 and one of the changes was going from safecracker to EE forms.
All working well except when I use date picker for entry date and closing date. Entry date, by default formatting looks ok, but as soon as I change the date it appear with undefined (example: 2013-11-12un12efine12). Same happens to Expiry date as well.
I've added the css as required and it seems fine:
<link href="{path=css/_ee_channel_form_css}" type="text/css" rel="stylesheet" media="screen" />
and it starts with
{exp:channel:form channel="jobs" return="/jobs/booking/ENTRY_ID" include_jquery="yes"}
And I believe this is correct as well.
This is the page http://www.youthworks.net/jobs/booking
If anyone have an idea where something is wrong, I would love to hear from you.
Cheers