I have a form with 2 file upload fields that I want to validate in such a way that one of the two fields must have a file.

I know how to make it validate each one independently, but I need it to take both fields into account for this particular validation. How can I get this done?

does support even read these forums?

This is not possible with Form Master.

I don't know what your requirements are but maybe you can use a field rule to show one of the upload fields based on a choice the user makes on say a RadioButtonList. You can put RequiredFieldValidators on both upload fields and only the one shown will be enabled.

I may need to send you Version 2.1.1 which enables Upload Fields in Field Rules first though.