Thread:Extension talk:Semantic Forms Inputs/Javascript error using input type=datapicker

I've installed SFI development version on MW 1.19 and SMW 1.7 and SF 2.5.2.

In the form I use:

It appears a textbox in the form and i get the followin Javascript error: Uncaught TypeError: Cannot read property 'regional' of undefined TestCluster:399 (anonymous function) TestCluster:399 fire load.php:14 self.fireWith load.php:15 jQuery.extend.ready load.php:6 DOMContentLoaded load.php:12