Work around for command line installs of SP2 for Mac Office 2011
Command line installs of Service Pack 2 for Mac Office 2011 may fail.
This is due to a problem with a script that cleans up the temporary folder used during the installation. This issue has been seen with Lion and can also occur on any Mac OS if multiple command line installs are done at the same time.
. . .
Continue Reading: Work around for command line installs of SP2 for Mac Office 2011