Released: Update Rollup 1 for Exchange Server 2010 SP1

This was installed for me via Automatic Updates, and completely broke my OWA. Previously, it was stock with SP1 and Forefront. It created the ClientAccessOwa14.1.255 structure with all the right subfolders, but ALL the folders were blank, except for one file: scriptspremiumuglobal.js. Obviously, this threw errors of  Microsoft.Exchange.Clients.Owa.Core.OwaThemeManagerInitializationException "Couldn't find a 'base' theme". Attempting to copy over the files from the base SP1 OWA14.1.218.13 folder got me nowhere, and so i've had to resort to removing the patch. Nothing else is installed on the system/ any major modification to the stock exchange setup, so this strikes me as pretty, pretty odd. Any chance someone could have a look over this?