Here is the first Update Rollup for Microsoft System Center 2012 and the issues that are fixed in the update rollup. In additon, the article has the associated installation instructions for the Updste Rollup.

http://support.microsoft.com/kb/2686249

Follow the installation instructions to download and then install the update packages for System Center 2012 Virtual Machine Manager, System Center 2012 App Controller and System Center 2012 Operations Manager.

Enjoy!

Chris Samson