An August 14, 2012 security update was causing an “Unspecified Automation Error” when running Microsoft Office VBA code after installing. The update affects Microsoft Word, Access, Excel and PowerPoint.

To fix the problem, you’ll need to re-register MSCOMCTL.OCX. For instructions, go to:

http://blogs.technet.com/b/the_microsoft_excel_support_team_blog/archive/2012/08/15/quot-unspecified-automation-error-quot-after-applying-ms12-060.aspx