I have a very extensive database that was working fine one day. However, now I am unable to modify the switchboard. The following message appears: "The Switchboard Manager was unable to find a valid switchboard in the database. Would you like to create one?" When you select yes, it creates a duplicate of the one that I am using, but I can not add any databases to the switchboard. Any suggestions of how to change my existing switchboard, without recreating everything?