Exchange 2007 SP1 OWA do not display images after installing Rollup 9

PROBLEM After Exchange 2007 SP1 Rollup 9 is installed users will not see any graphics while accessing emails from OWA.

CAUSETheme file are missing from the "C:\Program Files\Microsoft\Exchange Server\ClientAccess\Owa\8.1.393.1\themes\base" directory.

SOLUTION: Copy the files from the earlier install folder e.g. from "C:\Program Files\Microsoft\Exchange Server\ClientAccess\Owa\8.1.240.5\themes\base"