Some users still feel the need to use Office 2011 and have been having a problem with Word and other apps quitting on launch. Rebuilding the database, trashing preferences, cleaning cache didn’t solve.

The solution for Word and Excel quitting on launch is to turn off Error Reporting.  

You can turn Error Reporting off by navigating to /Library/Application Support/Microsoft/MERP2.0/Error Reporting

Launch Error reporting. In the application dropdown menu, select Preferences.  Uncheck Enable Microsoft Error Reporting.

Changes will not take effect until you relaunch your Microsoft applications.