If you edit the "installerdata.xml" file, and change the line with the version number of 1.5.1.0 to 1.4.1.0, save and go to NFS Most Wanted Icon within Origin (logged in and online) right click and run "check for updates", after the update runs, the DLC Bundles work again. This has worked for us and hopefully to everyone !
Good Luck
Race On !
Mike & Spencer.
