PowerPoint was unable to display some of the text, images, or objects as slides in the file (name) because they have become corrupt. Affected slides have been replaced by blank slides in the presentation and it is not possible to recover lost information. To ensure that the file can be opened in previous versions of PowerPoint, use the Save As command and save the file with the same name or a new name.

Brzo rješenje je deinstalirati taj update, te pričekati da Microsoft riješi problem.

[1] http://support.microsoft.com/kb/2489283