Mac Office 2011 – When Using “Insert Symbol” The Application Tries to Connect to an Offline Server

I have this issue on all Mac Office 2011 program that have an "Insert | Symbol..." option. It shows me the symbol options but an error pops up saying "There was a problem connecting to server 'my-old-server.'" That server is no longer used and is not available. I can't figure out what setting in Office points to that server so I can remove it. I've search spotlight for the name but it doesn't return any results. How I can remove the reference to server and stop the error from appearing?

Thanks.