Verify disk is ok.
I have a backup, but nothing up to date. Most recent backup was over a year ago.
Of course I should, unfortunately I don't. I get to step 4 of the rebuild process (copying database) and it just runs for ages and then quits unexpectedly with an error message saying "Entourage Disk Utility quit unexpectedly > send Error report, etc."
Ok I say that because it seems your database is corrupted at this point. Go to Macintosh HD / Users / yourusername / Library / Preferences and drag com.microsoft.entourage.plist to the trash, restart then open Word and go to Help / Check for Updates. If all is up to date try rebuilding the database again:hold down the Option key and open Entourage, this will open the Microsoft Database Utility, rebuild the database then quit when done and open Entourage.