Unfortunately, the patch resulted in many users who reported that PowerPoint refuses to open after the update is installed. The Register dug into its archives and notes this is the sixth time in eight months that Microsoft has had to withdraw a patch!
In response to those reports, Microsoft said the update “is being revised to address an issue that is under investigation.”
By The Register's count, this is the sixth time in eight months that Microsoft has had to withdraw a patch. Last August a patch was pulled after causing Blue Screens of Death, then in October a new hashing feature also warranted a recall. In December Redmond fluffed three patches, for root certificates, Exchange 2010 and Excel.