It has been a while since the last release of Xataface so I have released a bug fix release that includes all of the small changes that have accumulated over the past several months. This version includes better support for PHP 5.3 and fixes a lot of the small bugs and annoyances that have been pointed out in the forum.
There shouldn't be any problem upgrading from 1.2.x as there aren't any major changes here. Just stability improvements for the most part.
https://sourceforge.net/projects/dataface/files/