Thanks in advance for any assistance you are willing to provide to help me resolve my issue. My sutuation is this, I'm using FileMaker 12 Pro Advanced to develop a database which will be used to track student training histories. I have a field for the student's date of birth which is configure to perform validation on data entry to ensure the field is not empty. I've also provide the user permission to override this validation process during data entry. The problem is that, although these settings work perfectly when the database is opened on a Mac running OS 10.8.4, when I try to leave this field empty on a machine running Windows 7 I get no option to override the validation. Is this a known bug, or am I missing something? Thanks for taking the time to read this. Have a great day!