Your computer is Windows 7? The server is Winows 3007? Filemkaer is version 12??
When the database was transferred, it was closed after making a backup of the database. It was transferred physically or over the netwrok?
You have access to the server, with an installed Filemaker Pro for testing locally on the server?
You do not have your local copy open as you are editing the server copy? The two copies have the same user and security settings?