In File Options, check the Data-Entry section of the text tab for options that control formats used when entering a date.
Thanks, PhilModJunk... much appreciated. I passed the details on to the developer. Below is his reply. After the database is developed, we will switch the date format."If the file systems and the system settings are different you often get a warning message about it. The only way to suppress the warning is to delete all the records and re-import them from a backup. We might try switching it at the end of development, but again, I'd stay away from it for now."