[Koha] No check box in Manage patron messaging settings

Hi all, I installed Koha 3.00.05. Email column in "Manage Pattern messaging settings for patron" under patron settings does not shows option for checking. It seems blank. you can see the screen shot here: http://www.flickr.com/photos/51585079@N02/4744574193/ with regards vishnuvarthan perumal vishnu@e-ndicus.com http://e-ndicus.com