[bcreekski]

If you have WSJ Mobile Reader isnstalled, it may block Backup. You can find several references by using Search. I upgraded to DM 4.5 and could not Backup until deleting WSJ Mobile Reader and deleting all my profiles. Be forewarned!!

[Swerengen]

Good find -- I am not a subscriber to WSJ but I am sure many on the forums are.

More discussion on this topic can be found here WSJ Mobile Reader - BlackBerryForums.com : Your Number One BlackBerry Community