Official Adobe Statment on version 1.4
lightroom-blog.com/2008/03/17/official-adobe-statment-on-version-1-4
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
Tom Hogarty, the Lightroom Product Manager has weighed in on the recent issues with the 1.4 upgrade: "The Lightroom 1.4 update for Mac and Windows has been temporarily removed from the Adobe.com web site. Those Lightroom users who have installed Lightroom 1.4 should uninstall the update and install Lightroom 1.3.1.(Mac, Win) until a further update can be provided. For those not in immediate need of the updated camera support available in Camera Raw 4.4 or the DNG 4.4 Converter, it's recommended that you also continue working with the 4.3.1 versions. (Mac, Win)" Read More .