It appears the problem is caused by a conflict between office and the DLLs installed by some 3rd-party products using Visual Studio. You can download an updated copy of Visual Studio from:
http://www.microsoft.com/en-us/downl...s.aspx?id=5582. Once you've installed that, the problems should cease.
See also:
http://support.microsoft.com/default...;EN-US;2525435