U44M update error http://forums.adobe.com/thread/1289956 may help
-more U44.. discussion http://forums.adobe.com/thread/1275963
Select a topic, then click I STILL NEED HELP to start Premiere Elements chat
The following blog post discusses the matter of the Premiere Elements 12.1 Update and points to Update failure remedies contributed by Adobe and others.
Please let us know the outcome.