Entourage 2004 fails to start on: "You do not have write access to the Entourge application folder"

Launching Entourage kicks back an error saying:

"You do not have write access to the Entourage application folder. To run Entourage you must have the administrative user remove the Identities folder from the application folder. For more information, see the Entourage Read Me file."

After messing around with permissions, re-installing and the like, we found that the solution was to delete the Entourage Temp folder from ~/Documents/Microsoft User Data Folder. If that doesn't do the trick, try moving the entire Microsfot User Data folder to the desktop and then launch Entourage.

The folder contains lots of saved information about the user so moving or deleting it will pretty much reset Office to it's base state.