Looks like Adobe has some problems with the latest update. The following message appears on the Adobe Lightroom site.
“The Lightroom 1.4 update has been temporarily removed from the Adobe.com web site in order to allow time for additional investigation into several bugs that were discovered after the update was released. At this time, we recommend uninstalling Lightroom 1.4 and installing Lightroom 1.3.1.”
“Additional details regarding the Lightroom 1.4 update will be posted to http://blogs.adobe.com/lightroomjournal/.”
It appears in my short time testing it, that 1.4 has problems writing, storing or saving (I don’t know which) XML data.
We’ll keep you advised.