When you open a project or project suite in shared mode, TestComplete creates a configuration file that will store your user-specific information for that project (or project suite). It will ask you for the configuration file location. To prevent possible problems which the overwriting of a configuration file may cause, TestComplete does not allow users to overwrite these files. So, if you specify a folder that already contains a configuration file, TestComplete will show this message notifying you about the problem and asking you to choose another folder.